20 Best Vacuum Insulated Coffee Mug [2024]

Are you looking for the best vacuum insulated coffee mug? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling vacuum insulated coffee mug.

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1 SUNWILL 14 oz Coffee Mug, Vacuum Insulated Camping Mug with Lid, Double Wall Stainless Steel Travel... SUNWILL 14 oz Coffee Mug, Vacuum Insulated Camping Mug with Lid, Double Wall Stainless Steel...
2 YETI Rambler 20 oz Tumbler, Stainless Steel, Vacuum Insulated with MagSlider Lid, Black YETI Rambler 20 oz Tumbler, Stainless Steel, Vacuum Insulated with MagSlider Lid, Black
3 SUNWILL 20oz Tumbler with Lid, Stainless Steel Vacuum Insulated Double Wall Travel Tumbler, Durable... SUNWILL 20oz Tumbler with Lid, Stainless Steel Vacuum Insulated Double Wall Travel Tumbler,...
4 YETI Rambler 14 oz Mug, Vacuum Insulated, Stainless Steel with MagSlider Lid, Harvest Red YETI Rambler 14 oz Mug, Vacuum Insulated, Stainless Steel with MagSlider Lid, Harvest Red
5 Stanley Classic Trigger Action Travel Mug 20 oz –Leak Proof + Packable Hot & Cold Thermos –... Stanley Classic Trigger Action Travel Mug 20 oz –Leak Proof + Packable Hot & Cold Thermos –...
6 S'well Stainless Steel Traveler-12 Fl Oz Triple-Layered Vacuum-Insulated Travel Mug Keeps Coffee,... S'well Stainless Steel Traveler-12 Fl Oz Triple-Layered Vacuum-Insulated Travel Mug Keeps Coffee,...
7 12 oz Insulated Coffee Mug with Lid, Stainless Steel, Double Wall Vacuum Insulated Travel Mug Coffee... 12 oz Insulated Coffee Mug with Lid, Stainless Steel, Double Wall Vacuum Insulated Travel Mug...
8 JURO Tumbler 20 oz Stainless Steel Vacuum Insulated Tumblers w/ Lids and Straw [Travel Mug] Double... JURO Tumbler 20 oz Stainless Steel Vacuum Insulated Tumblers w/ Lids and Straw [Travel Mug]...
9 DLOCCOLD Tumbler Double Wall Stainless Steel Vacuum Insulated Coffee Travel Mug with Lid and Handle... DLOCCOLD Tumbler Double Wall Stainless Steel Vacuum Insulated Coffee Travel Mug with Lid and...
10 ALOUFEA 12oz Stainless Steel Insulated Coffee Mug with Handle, Double Wall Vacuum Travel Mug,... ALOUFEA 12oz Stainless Steel Insulated Coffee Mug with Handle, Double Wall Vacuum Travel Mug,...
11 Asobu Ultimate Stainless Steel Ceramic Inner Coating Mug with Double Walled Copper Lining... Asobu Ultimate Stainless Steel Ceramic Inner Coating Mug with Double Walled Copper Lining...
12 Contigo Luxe AUTOSEAL Vacuum-Insulated Travel Mug | Spill-Proof Coffee Mug with Stainless Steel... Contigo Luxe AUTOSEAL Vacuum-Insulated Travel Mug | Spill-Proof Coffee Mug with Stainless Steel...
13 Contigo Autoseal West Loop Vacuum-Insulated Travel Mug, 20 Oz, Stainless Steel Contigo Autoseal West Loop Vacuum-Insulated Travel Mug, 20 Oz, Stainless Steel
14 Sursip 30 oz Stainless Steel Tumbler/Mug/Cups,Double Wall Vacuum Insulated Water Mug with... Sursip 30 oz Stainless Steel Tumbler/Mug/Cups,Double Wall Vacuum Insulated Water Mug with...
15 12 oz Stainless Steel Vacuum Insulated Tumbler - Coffee Travel Mug Spill Proof with Lid - Thermos... 12 oz Stainless Steel Vacuum Insulated Tumbler - Coffee Travel Mug Spill Proof with Lid - Thermos...
16 BYH 18 Ounce Stainless Steel Coffee Cup, Vacuum Insulated Mug With Lid, Suitable For Car, Home,... BYH 18 Ounce Stainless Steel Coffee Cup, Vacuum Insulated Mug With Lid, Suitable For Car, Home,...
17 18oz Insulated Tumbler Stainless Steel Vacuum Coffee Travel Mug Cup with Flip Lid, Double Wall... 18oz Insulated Tumbler Stainless Steel Vacuum Coffee Travel Mug Cup with Flip Lid, Double Wall...
18 Contigo Stainless Steel Vacuum-Insulated Mug with Handle and Splash-Proof Lid, 2 Count (Pack of 1),... Contigo Stainless Steel Vacuum-Insulated Mug with Handle and Splash-Proof Lid, 2 Count (Pack of...
19 Lafaso 14oz Coffee Mug Cup with Handle,Vacuum Insulated Coffee Mug with Sliding Lid, Double Wall... Lafaso 14oz Coffee Mug Cup with Handle,Vacuum Insulated Coffee Mug with Sliding Lid, Double Wall...
SaleBestseller No. 1
SUNWILL 14 oz Coffee Mug, Vacuum Insulated Camping Mug with Lid, Double Wall Stainless Steel Travel...
  • Vacuum Insulated Technology: SUNWILL coffee mugs are with double walled vacuum insulation technology, keeping your favorite beverages hot for 3+ hours...
  • Powder Coated Premium 18/8 Stainless Steel: The insulated coffee mug is made from premium 304 food Grade stainless steel, never rust, lead free, easy...
  • BPA Free Press-in Lid: The eco-friendly lid is completely BPA free; silica gasket seals to achieve maximum spill proof capability. Wide mouth drinking...
  • Comfortable Handle: Full loop designs fit mitts fully, making it the great outdoor camping mug and the coffee mug in the office as well. Perfect gift...
Bestseller No. 2
YETI Rambler 20 oz Tumbler, Stainless Steel, Vacuum Insulated with MagSlider Lid, Black
  • These Ramblers come standard with our YETI MagSlider Lid, the only drink lid that uses the power of magnets to keep your water, beer, or favorite...
  • Our Ramblers are BPA-free, dishwasher safe, and have a No Sweat Design to make sure your hands stay dry
  • Dracut is a durable coat of color that won't fade, peel, or crack through extended field use and also provide additional grip to the Rambler's...
  • We over-engineered these double-wall insulated tumblers with an 18/8 stainless steel body, which means your drink still keeps its temperature no...
  • The YETI 20 oz. Rambler Tumbler stands 6 7/8 in high and has a lip diameter of 3 1/2 in. All YETI Tumblers are sized to fit in standard sized cup...
SaleBestseller No. 3
SUNWILL 20oz Tumbler with Lid, Stainless Steel Vacuum Insulated Double Wall Travel Tumbler, Durable...
  • Insulated Stainless Steel: Sunwill 20oz tumbler is with Double-Wall vacuum technology to keep drinks hot for over 6 hours and cold for around 24...
  • Premium Material: The tumbler is made from high quality 18/8 304 food grade stainless steel. Lead free and durable. Rust-proof, easy wash and...
  • Superior Powder Coated Finish: Sweat proof, easy grip, the advanced technology prevents heat transfer to outer wall, condensation free and long...
  • BPA Free Sliding Lid, Eco-friendly and Splash Proof: Extra sealed and the lid cover provide maximum splash-proof capability. Drink hole on the top for...
SaleBestseller No. 4
YETI Rambler 14 oz Mug, Vacuum Insulated, Stainless Steel with MagSlider Lid, Harvest Red
  • Unlike traditional camp mugs, this double-wall vacuum-insulated body protects hands from hot or cold contents while keeping coffee, chili, oatmeal –...
  • These Ramblers come standard with the YETI MagSlider Lid, the only drink lid that uses the power of magnets to keep your favorite drink on lock
  • While the MagSlider Lid adds a barrier of protection for keeping drinks contained and preventing heat or cold from escaping, Please Note – The...
  • YETI Ramblers are BPA-free, dishwasher safe, and have a No Sweat Design to make sure your hands stay dry. The tough Duracoat coating on the colored...
  • The YETI 14 oz. Rambler Mug stands 3 3/4 in high and has a lip diameter of 4 in, and with the handle its 5 inches wide
SaleBestseller No. 5
Stanley Classic Trigger Action Travel Mug 20 oz –Leak Proof + Packable Hot & Cold Thermos –...
  • PERFECT TRAVEL MUG: The Stanley Trigger Action Travel Mug is designed to fit in most cup holders so it can ride along on your daily commute.The...
  • TOUGH AND DURABLE: Unlike normal mugs, this is manufactured using 18/8 stainless steel, meaning it can take a beating. Everything is made with...
  • LEAK RESISTANT CAP: This trigger action lid makes this travel thermos spill-proof and easy for one-handed use. The lid is designed with a push button,...
  • EASY TO CLEAN DESIGN: This bottle is made with a wide mouth tumbler opening that makes washing by hand a breeze. All components are also dishwasher...
  • LIFETIME WARRANTY: ‘BUILT FOR LIFE’. Since 1913 we’ve promised to provide rugged, capable gear for food and drink, built to last a lifetime....
Bestseller No. 6
S'well Stainless Steel Traveler-12 Fl Oz Triple-Layered Vacuum-Insulated Travel Mug Keeps Coffee,...
  • Vacuum Insulated - triple-layered construction, designed to keep beverages cold for 24 hours or hot for 12.
  • TRIPLE-LAYERED INSULATION: S’well Traveler Teakwood 12oz stainless steel travel / coffee mugs feature triple-layered, vacuum-insulated construction,...
  • THE PERFECT FIT: Our metal beverage containers are designed with an opening wide enough for most ice cubes so you can easily refill and reuse it over...
  • DON’T SWEAT IT: Toss your bottle in your bag without worrying about spills, drips, or condensation. S'well beverage containers are insulated with a...
  • WORRY-FREE HYDRATION: Your search for safety is over. All S’well containers are BPA-free and composed of 18/8 premium food-grade stainless steel. We...
SaleBestseller No. 7
12 oz Insulated Coffee Mug with Lid, Stainless Steel, Double Wall Vacuum Insulated Travel Mug Coffee...
  • PREMIUM STAINLESS STEEL: Made of food-grade 18/8 stainless steel, durable and rust-Proof, easy to clean
  • VACUUM INSULATION: Double wall vacuum insulated, keeps hot up to 3 hours or cold up to 9 hours
  • BPA-FREE: BPA free lid with silicon rubber gasket, dishwasher safe, shatter resistant. With drinking hole on the top for easy sipping and straw...
  • CONVENIENT HANDLE: Full-loop handle comfortably fits into your hands, easy to grip and carry
  • NO SWEAT DESIGN: Sweat proof design makes sure your hands stay dry, and leaves no water rings. Durable powder coating provides additional grip to the...
Bestseller No. 8
JURO Tumbler 20 oz Stainless Steel Vacuum Insulated Tumblers w/ Lids and Straw [Travel Mug] Double...
  • Stay Hot or Stay Cold- Retain the temperature of your chosen beverage for a prolonged period of time when you choose Juro. Any drink that is hot, like...
  • Unique Lids- Features two unique lids to choose from when enjoying your beverage. A new Slider Lid is fast and simple to use. It was inspired by the...
  • Sleek and Lightweight- Made with 100% Stainless Steel. Gently fits into your hand with an Anti-Sweat design. The 20 oz. lightweight and compact feel...
  • Eco-Friendly- Stop wasting and polluting with store bought plastic bottles and cups. Help save the ecosystem by using less plastic and distributing...
  • Carry around your beverages whether out at the mall, soccer game, or park. Stay refreshed and hydrated no matter what adventure life takes you on.
Bestseller No. 9
DLOCCOLD Tumbler Double Wall Stainless Steel Vacuum Insulated Coffee Travel Mug with Lid and Handle...
  • ✅Vacuum Insulated Technology: Keep your drink cold for up to 9 hours, or hot for up to 3 hours. The double-wall and vacuum insulation technology...
  • ✅Matte Powder Coated Premium 18/8 Stainless Steel: This insulated coffee mug is made from 100% premium pro-grade 18/8 stainless steel and treated...
  • ✅Dust-proof & BPA-Free Coffee Mug With Lid and Handle: The eco-friendly lid is completely BPA-free; silica gasket seals to achieve maximum...
  • ✅Perfect and Unique Gift Idea: The shape and color are originally designed by DLOCCOLD, making it a unique gift for yourself and the one you love....
  • ✅Risk-Free Purchase: If for any reason our product doesn’t meet your standards, you are always welcome to contact us. We are proud of the quality...
SaleBestseller No. 10
ALOUFEA 12oz Stainless Steel Insulated Coffee Mug with Handle, Double Wall Vacuum Travel Mug,...
  • VACUUM INSULATION COFFEE MUG: The coffee mug is vacuum double insulated. The double-walled insulation design ensures beverage can stay either hot or...
  • COFFEE MUG CUP WITH SLIDING LID: The grey transparent plastic sliding lid with a rubber gasket, which is well tightness. It is easily swiped to open...
  • STAINLESS STEEL COFFEE MUG: The coffee mug is made of food-grade 18/8 stainless steel, liner of coffee mug will not produce any taste and will not...
  • 12OZ COFFEE MUG:12oz mug is lightweight and easy to carry, the surface of it is matte powder coating, this sweat-free design make coffee mug easy to...
  • 100% CUSTOMER SATISFACTION: There are multiple colors to choose freely. Coffee mug is suitable for home, travel, office, lounge, bar, restaurant and...
SaleBestseller No. 11
Asobu Ultimate Stainless Steel Ceramic Inner Coating Mug with Double Walled Copper Lining...
  • CERAMIC INNER COATING - Asobu is the only mug you will find that has a ceramic inner coating which delivers the purest taste from your beverage
  • EASY CLEAN NON BREAKABLE LID - Our Tritan BPA FREE NON BREAKABLE lid is a push on tight fitting lid that comes apart for easy and thorough cleaning
  • ROUND HANDLE - Designed with everyone in mind the rounded handle gives an easy grip to the cup
  • DOUBLE WALLED VACUUM INSULATION - Built with durable walls so you wont feel the heat of your tea or the cold of your brew
  • CLASSIC AND DURABLE - This classy and durable travel companion is perfect for indoor or outdoors
SaleBestseller No. 12
Contigo Luxe AUTOSEAL Vacuum-Insulated Travel Mug | Spill-Proof Coffee Mug with Stainless Steel...
  • Seal it in: leak- and spill-proof Travel mug thanks to AUTOSEAL lid
  • For the long Haul: Stainless Steel double-wall vacuum insulation keeps drinks hot up to 5 hours or cold up to 12
  • Lend a hand: one-handed drinking convenience on the go
  • Lock it up: lock feature prevents accidental pressing of AUTOSEAL button
  • Squeaky clean: underside of lid opens up for thorough cleaning
Bestseller No. 13
Contigo Autoseal West Loop Vacuum-Insulated Travel Mug, 20 Oz, Stainless Steel
  • Our lids are sealed: Autoseal technology is leak and spill proof (Yes there is a difference)
  • For the long haul: Drinks stay hot up to 7 hours and cold up to 18 with Thermalock Vacuum Insulation
  • Lend a hand: Easy one handed drinking from this travel coffee mug with the push of a button
  • Clean up: Top rack dishwasher safe lid, hand wash body
Bestseller No. 14
Sursip 30 oz Stainless Steel Tumbler/Mug/Cups,Double Wall Vacuum Insulated Water Mug with...
  • FITS MOST CUP HOLDERS - The bottom of the Bottle is conveniently sized to fit car cup holders for easy portability. Save money on disposable cups that...
  • DOUBLE WALL & INSULATED COFFEE TUMBLER-Double-walled vacuum insulated stainless steel body ensures that it has the perfect performance to keep the...
  • Using It Everywhere: Suitable for swimming, Sports, Travel, Road trip, Barbecue, Camping, Party,Driving etc. You can share them as gifts on birthday,...
  • Easy to washing–This Sursip Cup is easy to clean and dishwasher safe. Spend less time cleaning and more on the things that matter. Features a...
Bestseller No. 15
12 oz Stainless Steel Vacuum Insulated Tumbler - Coffee Travel Mug Spill Proof with Lid - Thermos...
  • Healthy Material - The Vacuum double wall was made of high quality grade 304 stainless steel that completely taste-free, rust-proof, leak-proof, The...
  • Leakproof Design - The coffee mug lid comes with an airtight silicone seal that prevents the drinks from spilling. Air Vent on the lid allows...
  • Perfect Capacity - 12oz capacity, small and beautiful, easy to carry,Narrow body design makes it easy to grab and go, also fits most car cup holders...
  • Easy to Carry - Enjoy your coffee easily wherever you go. Suitable for use indoor&outdoor, such as home, parties, travel, school, riding,and office...
  • Use Notes - The coffee cup buckle can be closed tightly after two "clicks",Hand wash only, the dishwasher is not recommended.cannot put in the...
Bestseller No. 16
BYH 18 Ounce Stainless Steel Coffee Cup, Vacuum Insulated Mug With Lid, Suitable For Car, Home,...
  • Insulation stainless steel: BYH 18oz vacuum flask adopts double-wall vacuum technology, which can keep heat for more than 6 hours and refrigerate for...
  • BPA-free press-fit sliding lid: The environmental protection lid is completely BPA-free; it is sealed with a silicone gasket to achieve maximum...
  • High-quality materials: stainless steel is made of high-quality 18/8 304 high-quality food-grade stainless steel. Lead-free and durable. Anti-rust,...
  • Excellent non-slip finish: The surface of the cup body is sprayed with powder, matte texture, and comfortable to hold. Even if the bone is dropped,...
  • Heat insulation: anti-sweat, easy to grasp, advanced technology to prevent heat transfer to the outer wall, non-condensing, durable. The interior is...
Bestseller No. 17
18oz Insulated Tumbler Stainless Steel Vacuum Coffee Travel Mug Cup with Flip Lid, Double Wall...
  • Insulated Tumbler is made from durable stainless steel with double-wall vacuum insulation, It can minimizes heat transfer to keep exterior from...
  • Eco-Friendly and Reusable: Reduce the use of disposable plastic products and protect the environmental protection ecosystem through reusable Coffee...
  • Travel Mug double-wall vacuum insulation adds a barrier of protection for keeping drinks contained and preventing heat or cold from escaping.Twist &...
  • Water Tumbler retain the temperature of your chosen beverage for a prolonged period of time. Any drink that is hot, like coffee, can stay hot for up...
  • Coffee Tumbler with Flip an be used as a gift to friends, relatives and leading colleagues. This is a very practical and stylish water cup. The...
Bestseller No. 18
Contigo Stainless Steel Vacuum-Insulated Mug with Handle and Splash-Proof Lid, 2 Count (Pack of 1),...
  • SIP CONFIDENTLY WHEREVER YOU ARE: Vacuum-insulated stainless steel keeps beverages hot up to 5 hours and cold up to 15 hours
  • COMFORTABLE HANDLE: Sleek stainless steel handle allows for easy drinking
  • NO MESS: Splash-proof lid keeps beverages inside when closed and will not splash on you
  • EASY TO CLEAN: Top-rack dishwasher-safe lid and body make cleaning easy
  • NON-SLIP GRIP BASE: Helps prevent mug from slipping, clanking, or scratching on surfaces
Bestseller No. 19
Lafaso 14oz Coffee Mug Cup with Handle,Vacuum Insulated Coffee Mug with Sliding Lid, Double Wall...
  • Reusable Insulation Tumbler Cup: Made from 18/8 food grade 304 stainless steel with polishing manufacturing. The firmly attached welding handle is...
  • Vacuum Insulated Coffee Mug: The inner wall of the vacuum sealed area is coated with copper, which can reduce the transfer of heat to the surface...
  • Leak-Proof Travel Cup With Handle: The firmly attached welding is convenient for gripping. Lid and cup are locked securely with the black rubber ring,...
  • Easy To Clean Coated Coffee Cup: The surface is coated with powder to keep fingers dry and stains free. Powder on the outside wall won't fade, fall...
  • Suitable For Home Office: You can use it to drink coffee, beer, juice, coke, and other beverages when you are at home, office, the beach, camping,...

Having trouble finding a great vacuum insulated coffee mug?

This problem is well understood by us because we have gone through the entire vacuum insulated coffee mug research process ourselves, which is why we have put together a comprehensive list of the best vacuum insulated coffee mugs available in the market today.

After hours of searching and using all the models on the market, we have found the best vacuum insulated coffee mug for 2023. See our ranking below!

How Do You Buy The Best Vacuum Insulated Coffee Mug?

Do you get stressed out thinking about shopping for a great vacuum insulated coffee mug? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching vacuum insulated coffee mug, which is why we have assembled a comprehensive list of the greatest vacuum insulated coffee mug available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for vacuum insulated coffee mug that you consider buying. Your questions might include the following:

  • Is it worth buying an vacuum insulated coffee mug?
  • What benefits are there with buying an vacuum insulated coffee mug?
  • What factors deserve consideration when shopping for an effective vacuum insulated coffee mug?
  • Why is it crucial to invest in any vacuum insulated coffee mug, much less the best one?
  • Which vacuum insulated coffee mug are good in the current market?
  • Where can you find information like this about vacuum insulated coffee mug?

We’re convinced that you likely have far more questions than just these regarding vacuum insulated coffee mug, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for vacuum insulated coffee mug, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible vacuum insulated coffee mug. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an vacuum insulated coffee mug buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available vacuum insulated coffee mug currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of vacuum insulated coffee mug has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an vacuum insulated coffee mug?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your vacuum insulated coffee mug.
  5. Customer Ratings: Number ratings grade vacuum insulated coffee mug objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their vacuum insulated coffee mug.
  7. Product Quality: You don’t always get what you pay for with an vacuum insulated coffee mug, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an vacuum insulated coffee mug is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining vacuum insulated coffee mug information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding vacuum insulated coffee mug is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What is the best insulated coffee mug?

A: 1 Rambler. … 2 Hydro Flask Stainless Steel Coffee Travel Mug. … 3 American Road Trip Adventure Mug. … 4 Contigo Autoseal Insulated Travel Mug. … 5 Vacuum Insulated Coffee Travel Mug. … 6 Handmade Travel Tumblers. … 7 Stojo On The Go Coffee Cup. … 9 Glass Reusable Coffee Cup. … 10 S’Well 18-Ounce Insulated Stainless Steel Tumbler. …

Q: What are the best insulated travel mugs?

A: Best Overall: YETI Rambler 20-Ounce Travel Mug; Best Budget: Contigo Vacuum Insulated 24-Ounce Travel Mug; Best for Heavy Travel: HydroFlask Coffee Flex-Sip Wide-Mouth 20-Ounce

Q: How does an insulated coffee mug work?

A: How does an insulated coffee mug work? These mugs feature an exterior bottle with a double-wall container inside the mugs. No air between two walls creates a vacuum to keep hot beverages warm and chilled drinks cold for a longer period.

Q: Are ceramic coffee mugs safe to drink out of?

A: Mugs can be made with plastic, ceramic, porcelain, bone china or glass. Therefore, it will not be good for a coffee drinker to drink coffee in a mug that contains lead or cadmium. Microwaving a mug that contains lead or cadmium will also make leaching of toxicants easier and faster. Additionally, how can you tell if a mug has lead in it?