Topeak QT Trunk Bag RX Bike Trunk Bag with Side Pannier Compact rear-mounting trunk bag with side panniers for storing gear while cycling Extra-thick ridged foam walls for storing electronics or cooling beverages Durable 100-denier Cordura Plus construction; multifunction top pocket 3M reflective striping for safety; built-in carrying handle and shoulder strap 350 cubic inches of storage space; Quick Clip mount for Quick Track RX rack