Not too big, not too small, this seat bag is just right for many riders. Enough room for a flat fix kit, phone, and even an energy bar or two. Plus, the Oceanweave fabric is made from reclaimed and recycled fishnets to help protect the world's oceans and marine life. Mounting: - Lightweight hook-and-loop strap system mounts to saddle. - Rubberized seat post strap with camlock to stay tight while avoiding damage to cycling shorts. Materials: - Oceanweave(R) reclaimed fishnet polyester with waterproof polyurethane coating - Water-resistant stitched construction. - Camlock made from reprocessed polyamide and reclaimed textiles (clothing). Compatibility: Most bike seats Features: - Back flap zips open for easy access. - Inner cash/card/ID pocket. - Water-resistant outer fabric sheds dirt easily and resists fading. - Reflective rear 3M(R) logo increases visibility at night. - Rear light clip (light not included).