NEW SUNWILL 20oz Tumbler with Lid (Navy Blue &Wine Red pack), Stainless Steel Insulated Double Wall Travel Tumbler. Reusable Insulated Coffee Mug, Thermal... 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 hours. 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 unbreakable. Superior Powder Coated Finish: Sweat proof, easy grip, the advanced technology prevents heat transfer to outer wall, condensation free and long lasting. Electro polished inside delivers elegant look. Designed for car cup holders. 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 easy sipping. Straw friendly.