The CamelBak Classic
Hydration Pack sets the standard by which all others follow with its
low-profile design and easy-access OMEGA Reservoir. This sleek
hydration pack carries 70oz (2L) of water for your hiking, biking,
and trail-running needs. The Classic Hydration Pack has a security
pocket for keys, ID, and energy bars. On hot days its mesh back
panel keeps the air flowing, and shock cords are ready to carry your
extra layers incase the weather turns nasty.