The Camelbak Lobo 9 Hydration Bag offers a versatile array of features designed to fit any MTB, hike, bike lifestyle...all in one pack! Led by Air Support™ Back Panel that's designed with Body Mapping Technology to allow for maximum ventilation on the hottest areas of your back, the Lobo™ is the leader of the pack with a 9L pack size and 2L Crux Reservoir