About this item Multifunctional Bamboo Lid: Our double wall glass coffee mugs comes with 2 bamboo lids. The bamboo lid is surrounded by a silicone ring, which has a very strong seal. You don't have to worry about coffee, latte, cappuccino, tea spilling out of your glass coffee cups. The bamboo lid of the clear coffee mug can also be used as coffee coaster. LARGE CAPACITY: The double wall glass coffee mugs holds 16 oz, perfect for large capacity serving latte, cappuccino, hot drinks, espresso and tea. DOUBLE WALL GLASSES DESIGN: The double wall glass coffee mugs have an air pocket which creates a complete insulation,can keep the coffee warm for long time. Coupled with our airtight silicone bamboo lid, our clear coffee mug with lid will keep your coffee cold and hot longer than other double-walled glass cup. The glass coffee cups can also be used for cold drinks without condensation. HEAT AND CONDENSATION RESISTANT: The double wall glass coffee mugs is made of durable borosilicate glass, lead-free. The clear coffee mug with lid can withstand temperatures from -4 to 302 degree F, so the glass coffee cups with lid can safely hold hot and cold drinks. EASY TO CLEAN: The clear coffee mug with is made of high borosilicate glass that won't stain easily, just rinse with water to make it look like new again. Hand wash is recommended. NICE GIFT: The double wall glass coffee mugs has a beautiful gift box ,so the glass coffee cups can be a unique gift for friends and family.In addition, clear coffee mug with lid is wrapped in pearl cotton to prevent the glass coffee mugs from being damaged during transport.