BIG CITY STRAP * STRAP MOUNT TANK BAG • Wind/Water resistant 1000D nylon construction • Scratchguard rubberized contact fabric • Front and rear strap mounting system • Expandable main compartment • Map window • 28cm x 23cm x 18.5cm storage (11.9 Liters) • 11" x 9.1" x 7.3" storage (731 cubic in.) Black