Firstgear Onyx Tail Bag Roadtex 1000 denier nylon with PVC coating and UV protection Bag is expandable 1 front pocket and 2 expandable side pockets Reflective piping and logo on the outside Zippered mesh pocket inside of the lid plus elastic penholders Soft flannel lining to protect valuables 2 adjustable straps with quick-release buckle to secure additional load to top of bag Hook-and-loop pockets on rear of bag to store adjustable straps Attaches with built-in bungee cords Light colored lining for easy visual access of contents 2 lower side flaps for secure mounting to bike Includes shoulder strap and rain cover Compressed 17L x 11W x 12H / 2,240 cubic inches Expanded 24L x 11W x 12H / 2,825 cubic inches