Make of food grade Polyethylene, Enduring & long terms. Our push-pull caps feature leakproof technology to ensures secure closures to leakage. The leakproof water bottle is light weight, providing enough water for your drinking needs without interfering or adding to your running burden. Suitable for long distances running, training, race and marathons. These bottles are most hydrations belts and waist packs. Suitable for runner, cyclists, and outdoor adventurers.