Kelty Ridgeway by Salfin 5 Liter Ultralight 15 oz Hydration Pack - For Biking, Hiking, Running and Skiing Includes 2L Microban antimicrobial reservoir, drink tube and bite valve Ultralight 15 oz with 5 Liter capacity Large main compartment for reservoir and additional storage, Padded back panel and shoulder straps featuring Air Channel technology In-Line quick disconnect, easy filling, Leak Free, Insulated tube Easy access storage, BPA Free