Kooshty Congo Stainless Steel Vacuum Water Bottle - 600mlthis friendly and functional bottle has a stainless steel vacuum construction, so it will keep liquids hot or cold. The carry loop makes it easy to carry and frees up the rest of your hand to carry something else, and the lid is finished off with a natural bamboo top. Once you start using the kooshty congo bottle, you will find it difficult to go back to a regular bottle. The double wall stainless steel vacuum construction keeps the liquid inside