This collapsible water bottle is made of food grade BPA-free silica gel and non-toxic,odorless material. Lightweight large capacity silicone water bottle of 17oz allows you to hydrate your body at any time; enjoy the outstanding design and convenience of this bottle compared to most products on the market. This water bottle is rollable and Foldable with metal carabiner and retainer band for clip-on and storage. It is a perfect companion for bicycling, running, swimming, outdoor activities, extreme sports, and more.