Rambo Bikes RamboTriple Accessory Bag- R161 Top bag comes with built in backpack straps, side bags come with shoulder straps. Easy on/of design allows for quick and secure mounting. Specifications for Rambo Bikes RamboTriple Accessory Bag: Color: Black Capacity: 75 liters Fabric/Material: PVC Application: Biking Water Resistance Level: Waterproof Features of Rambo Bikes RamboTriple Accessory Bag R150 rack is required to allow installation and proper use of this bag