There&';s not a hard bottle out there that&';s cleaner, greener, and more flexible than a Platypus Soft Bottle. Each one comes with their Clean-Taste Guarantee and its made with zero BPA. The Soft Bottle is green, too, because its ultra-reusable and lightweight, it uses less energy and materials. Finally, your Soft Bottle defines flexible. It fits in a drink holder, a round pocket, a flat pocket, or any hand. When empty, it rolls up and fits anywhere you want it to fit. Plus, it weighs 80% less than hard hydration bottles. Save space in your hiking pack or trail running vest when bring along the Platypus Soft Bottle with Push-Pull Cap. This low-profile bottle is lightweight, flexible, and takes up very little space once you&';ve polished it off. Best of all, it&';s made from a BPA-free plastic and features a push-pull cap for quick and convenient hydration. Features: Flattens and rolls up when empty, making it highly packable and saves space in travel bags, backpacks, and purses. Versatile opening is compatible with any threaded Platypus lid, multiple water filters, and drink tube kits to convert the bottle into a reservoir. Bottle narrows at the middle to make it easy and comfortable to hold. Materials are taste-free, BPA-free, BPS-free, and phthalate-free. 1 Liter capacity weighs just 1.2 oz, perfect for ultralight backpacking and camping.