The Nelson-Rigg Route One Traveler is an ideal companion for long range touring. This bag mounts directly to your luggage rack and is large enough to hold two full face helmets.; Industry leading UltraMax fabric for maximum UV-protection Mounts directly to most tour trunk luggage racks Additional 3" expansion section and 3 generous outer pockets Reflective piping for enhanced visibility Waterproof rain cover included Rigid overall bag construction and 3 carry handles for easy transportation off the bike Holds 2 full face helmets, even when non-expanded Lifetime manufacturer warranty 63 Liter capacity (73.5 when expanded) Dimensions: 22" L x 12" W x 14.5" H (17" H, when expanded)