The travel tumbler has a completely closed clear lid and the silicone gasket on the lid ensures that the tumbler is 100% leak-proof and dust-proof.

The ergonomic design allows one hand to use double-layer insulated water cups. The proper diameter allows it to be carried in a variety of ways, such as a standard bicycle bottle holder/cage, an adult backpack with external pockets, or a car cup holder.

Our vacuum travel tumblers is made of the highest quality premium 304 18/8 food grade stainless steel, Lead-free and not easy to fade, crack or peel, and healthier and more durable than a plastic cup. The wide opening is easy to clean without worrying about dirt. The shape is tapered designed, so fits most car cup holders.

Double-walled vacuum insulation makes heat transfer to the outer walls of the tumbler slow down. It means the tumbler keeps your favorite drinks ice cold or piping hot for hours. So you could enjoy your beverage cold by the pool, take your cup of joe on the go.