Nelson-Rigg (908-018 Motorcycle Roll Bag Attaches using our unique "Full-Nelson" mounting system; Can be mounted to sit on a luggage rack or passenger seat Bag holds shape even when empty; Side mesh pockets easily store smaller items Heavy-duty zippers with pull tabs for use with or without gloves; Highly reflective webbing helps enhance safety for night riding Adjustable carrying strap for easy transportation off your bike; Includes 100 Percent waterproof rain cover Main compartment measures: 13.5 Inch Length x 9 Inch Diameter; . Holds 17.26 Liters