High-volume carrier rack bag, specifically designed to be combined with the BCA-02 MountRack and BCA-03 RearRack. Large Storage compartment with protection foam inner. Two side compartments, backside compartment equiped with strap for LED attachment.4 velcro straps to secure the bag to the rack, preventing bag movement forwards or sideways.Bungee storage system.Removable and adjustable shoulder strap.