• Collapsible: The Burtrail collapsible running water cup is ultralight and soft, you can stow it in running belt or pocket, the included hook allows you to hang the cup on the running vest or bag, portable drinking cup anywhere
• Portable: Easily foldable,Rolled up or flattened when it empty, collapsible water cup collapse to only 0.39 inch. It's doesn't take up too much space
• Food grade: Our running cup is made of food-grade materials, BPA & PVC Free
• Four cup set: Contains 4 different colors, pair with 4 hooks
• Easy to Clean: Our collapsible cup can be rinsed with water