A large capacity, wedge-shaped saddle bag.Large capacity, wedge-shaped saddle bag. Velcro straps attach to saddle rails and seat post. Durable woven nylon construction. Large main compartment with labeled organizational pockets. Sub compartment for multi-tool or mobile device. Reflective logos and loop increases night visibility. Water resistant zipper with large pull loop.Storage CapacitySmall : S-Caddy will hold 1x Road Tube, Small Multi-tool, Tire Levers, 1x Patch Kit, Money/ID.Medium :1x MTB Tube, 2x Road Tube, Medium Multi-tool, Tyre Levers, 1x Patch Kit, Money/ID.Large :80 in3 / 1.3L 1x Patch Kit, Money/ID, Cell Phone, Tyre Levers, Large Multi-tool, 2x MTB Tubes 3x Road Tubes.