Stainless Steel Thermos Coffee Cup Mug with Lid Portable Insulated Coffee Mug Thermal Cup Heat-resistant Thermos Mug Drinkware. Desktop lightweight mug. Heat insulation anti scalding, hot and cold dual use, easy cleaning. Features: 1. The mug is made of durable stainless steel and has a double-layer vacuum insulation layer, which can well protect your hot or cold drinks. 2. The coffee cup is equipped with a sealed lid with a rubber gasket to ensure a tight fit. Equipped with a silicone straw to increase the fun of drinking. 3. The wide, comfortable grip and non-slip handle will help hold your coffee cup and make it easy to drink.