Come and see our amazing products. 10 oz tumbler is with Double-Wall vacuum technology to keep drinks hot for over 6 hours and cold for around 24 hours. The tumbler is made from high quality 18/8 304 food grade stainless steel. Lead free and durable. Rust-proof, easy wash and unbreakable. 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. If you need larger tumbler, we can also provide. Pls confirm with us about the packing info, stock color and exact production time before placing your order.