For an extended outing, choose the Zoid. Our 72-oz. (2.1L) system is incredibly easy to refill - unzip the unique cover design for instant access to the OMEGA fillport. Secure pocket holds cash, keys, and ID.

Features:

• Capacity: 72 oz. (2.1L)
• Cargo: 61 cu. in. (1L)
• Therminator Harness and Insulated Tube help keep water from freezing
• Includes SternumStrap for more comfort and stability
• Secure pocket holds keys, cash, and map
• Refill Easily througout the day with external fillport access
• Includes OMEGA HydroTanium Reservoir with lifetime warranty
• Low-profile design can be worn over or under a jacket