Silicone Foldable Water Bottle 680ml. Description: Water Bottle is lightweight and perfect for travel. It keeps you moving forward and focused on your next adventure, lightweight, and matches your style. Collapsible Water Bottle which can be folded to the size of a fist easily fits in pocket, purse, and bag. Water bottle is made with Medical grade BPA-free Premium silicone material. Imported Premium Quality made with BPA Free silicone material 680ml water bottle, sporty look water bottles for the fridge for men and women gym use, water bottle for kids school picnic and office, with unique features like fully Expandable and Foldable. No change in physical properties whether exposed to very low or very high temperatures Silicone is an environmentally friendly alternative to plastic. Silicone is a highly flexible and durable material that lasts far longer than most plastics. You can pop it into your pocket or handbag also.