Outdoor Folding Sport Silicone Water Bottles for Traveling Camping Hiking Walking Running Jogging(gray) Food grade silicone body PP cover, BPA Free. SPACE-SAVING - Capacity of 17oz water, and it is foldable without leaving any crease, takes very little space when empty. Water is life, carry water with you everywhere from now on, when traveling, hiking, jogging... ULTRA TOUGH FOOD GRADE SILICONE - leak resistant design and manufactured from flexible, ultra tough food grade silicone that won't split, crack or tear even after repeated use, for a super durable collapsible bottle that can be reused time and time again!