About this item FlipBelt Compatible – This running water bottle is made to fit perfectly inside of any FlipBelt running belt, preventing any bouncing or chafing. Convenience – The innovative design allows runners and other active individuals to go conveniently hands-free and stay hydrated. Comfort – The curved design creates a more natural fit around a runner's body so they can forget they're even carrying a water bottle. Safety – Made with BPA-free, 100% HDPE plastic, this bottle contains no harmful chemicals and is dishwasher safe. Versatility – FlipBelt users can store two of these water bottles in their belt in addition to their phone (or similarly sized items).