Topeak MTX Trunk Bag DXP Bicycle Trunk Bag with Rigid Molded Panels 600 Denier Polyester Expandable bike bag with divided main compartment and expandable top 2 side panels with expandable panniers add even more storage space 600-denier polyester construction with rigid molded side panels Shoulder strap for easy carrying; RedLite clip and elastic top bungees 1,380 cubic inches of storage; measures 14.5 x 8.5 x 9.8 inches (W x H x D) 1 Divided Main with Multi-stage, Expandable Top, Two Side with Expandable Panniers 1160 g / 2.53 lbs 20.2 l / Capacity 1380ci 420 Denier Nylon Water Bottle Holder, Shoulder Strap, Carrying Handle, 3M Reflective Strip, RedLite Clip, Elastic Top Bungees