Rigid inserts retain aerodynamic bag shape. Reflectorized RANS logo. Available in 1000 Denier Cordura construction. Mesh seat attach sleeve maintains airflow through seat back. Hydration bladder pocket. Accomodates helmet and shoes. Attach strap for clip-on lights. 840 cubic inches of cargo space Bag weighs 2 lbs. Fits most RANS Bike seats (excluding tall and short style) and most recumbent bike seats measuring 143/4" wide at the top and no greater than 15 1/4" wide 10" from the top of the seat back.