Available in a 3, 4, or 9 liter option, the RANGER Hydration Pack is designed for the hard race adventures. The solid 4-point suspension harness keeps the pack exactly where its intended, secure on your back. The 3 liter pack is best for 1-3 hours of racing time, the 4 liter pack for 2-4 hours of racing, and the 9 liter for a full-day's worth of riding. 400-denier nylon Patented No Dancing Monkey harness technology Twin port exit for tube from H2O-compartment. Organizer compartment with side opening Water-resistant smartphone pocket LED bike light attachment point Reflective point on back Tube port compatible with HHF kit Unisex fit.