This running water bottle is made to fit perfectly inside most running belts, preventing any bouncing or chafing. The curved design creates a more natural fit around a runner’s body so they can forget they’re even carrying a water bottle. Made with BPA-free, 100% PP plastic, this bottle contains no harmful chemicals. Provides on-the-go hydration that will allow you to increase your running performance for extended miles. 11 oz of water capacity. It’s very convenient to add a running water bottle clipped to a belt. The water bottle is just perfect for a long run, and also ideal for walking, cycling, cross country skiing, triathlon, trail, marathon, and hiking.