TPU Folding Water Bottle Climbing Soft Flask Blue Sport Water Bottle Water Bag Hydration Pack Cycling Features: -Flask compresses as you drink to remove water sloshing around within it -Updated gentle bite valve with greater flow rate, clean at the tooth -Slim and lightweight, fills easily with large mouth opening -Durable Thermoplastic Polyurethane (TPU) structure -BPA, PVC and Phthalate free, won't taint taste; Meets or exceeds FDA and EC legislation - Hydration vest compatible: fits smoothly in most hydration vest, belt or pack wallet Soft material conforms to any pocket for a comfortable wearing -Reliable and safe:100% BPA & PVC loose Wide working temperature vary (0° C- 40° C / 104-° F) Application:climbing/hiking/cycling/running