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.