CamelBaks 3 Liter Lobo Hydration Pack keeps you watered throughout your grueling bike ride. Whether youre peddling up a winding road or careening down the mountainside, the Lobo Packs mesh back and harness design keeps air flowing. This means less sweaty-back syndrome. CamelBaks big-bite valve makes it easy to bite down and take a sip. Once youre done, turn the leak-proof lock-off valve on the water tube and keep things dry. Simply unzip the CamelBak Lobo Pack and fill the water reservoir while its inside the pack. This packs low-profile design wont interfere with your helmet, and the gel pocket on the harness gives you quick access to energy food.