The CamelBak Podium® Chill™ 21 oz Bike Water Bottle is designed to fit a variety of bottle cages on the market. It is equipped with a self-sealing cap for less spills and splatters along with an easy squeeze design to ensure you get more liquid with less effort. The on/off valve provides a positive lock out for leak-proof transport and all parts are 100% free of BPA, BPS, and BPF so you can drink clean. The CamelBak Podium® Chill™ 21 oz Bike Water Bottle offers best-in-class hydration so you can stay focused on the ride.