Moto Hydro 4 is the high-end hydration pack for Enduro/Off-road motorcycle racing and adventure, with the perfect balanced fit for any individual rider. The pack is equipped with our bounce free No Dancing Monkey™ 1.2 harness system that makes the pack stay put on your back even in the most gnarly terrain. The unique elastic harness system allows you a tight fit but gives that extra freedom to breathe and move.