STAINLESS STEEL COFFEE MUG： Crafted with food-grade 18/8 stainless steel, this coffee tumbler is firm, durable, rust-proof, ensuring your every taste is fresh.LEAK PROOF LID AND STRAW：Each thermal coffee travel mug comes with a spill-proof slider lid , a drinking hole on the top for easy sipping. Two ways to drink make this mug the perfect choice for you at work or on the go.DOUBLE WALLED VACUUM TRAVEL MUG: Double-walled vacuum insulation makes heat transfer to the outer walls of the tumbler slow down. It means the insulated cup keeps your favo