The Jet Foldable Bottles are lightweight, dishwasher safe and completely free from Phthalates (PVC & BPA Free). The Jet flasks are compact and ergonomically designed, a perfect light-weight choice for running vests, belts and similar gear, and come equipped with our well known Helix Bite Valve, which is interchangeable with our high flow valve, for those of you who prefer faster water flow during running. Ideal for outdoor activities, sports and leisure. Ergonomic design. PVC and BPA Free Lightweight and foldable. Tasteless and odourless. Dishwasher safe. Fits most running vests, belts, and similar gear. Features Helix Bite Valve.