The CamelBak Podium Chill 21oz Bike Bottle is a water bottle for cool hydration in the saddle. Twist the valve at the top to keep it locked for zero spills, or leave it unlocked and the self-sealing cap will release water with a squeeze. The Chill version is insulated, keeping water colder for longer when putting in the miles on the bike. The 21-ounce fits in a variety of bike cage sizes, and from training to race day, it's one you can count on for quick hydration.