This is a sports folding water bottle. It is made of environmentally friendly materials, which are harmless to your health, leak-proof and fall-proof. You can even freeze it! This water bottle is foldable, flexible, and reusable. Clip it in and put it in your wallet, backpack, or any kind of bag. It’s a great holiday gift. Especially convenient for people who like outdoor sports, hiking, camping, traveling, fitness, cycling, and so on.