Leakproof puff valve spout provides a quick flow of water for instantaneous hydration and prevents leaking when not in use. Translucent body enables you to track your consumption throughout your workout. Strategically placed grip and ergonomic bottle design allow for easy handling. Pliable material provides enhanced squeezability for a faster flow of water. BPA free. 18 oz. capacity / 532 ml capacity. - Leakproof puff valve spout provides a quick flow of water for instantaneous hydration and prevents leaking when not in use. Translucent body enables you to track your consumption throughout your workout. Strategically placed grip and ergonomic bottle design allow for easy handling. Pliable material provides enhanced squeezability for a faster flow of water. BPA free. 18 oz. capacity / 532 ml capacity.