The Topeak RX Trunk Bag DXP is a larger capacity road TrunkBag bag, perfect for commuting, school and errands. Rigid foam insulates and holds shape. This bag features a large main compartment plus two zippered side compartments that zip open into full panniers and expandable multi-top. Aerodynamic shape is ideal for road and fitness bikes. Compatible with RX QuickTrack® system with side frames.Topeak RX Trunk Bag DXP FeaturesAdded Feature: Shoulder strap, Carrying handle, Elastic top bungees, 3M™ reflective strip, Safety light clip, Optional rain cover (3M™ is a registered trademark of 3M Company).Bag Attachment: RX QuickTrack® with attached side panelsCapacity: 7.3 L / 445 ciCompartments: One main, Two side zippered, Expanding panniers, Multi-expanding topInsulation: Rigid foamMaterial: 600 denier polyesterMax Load: Limited to rack maximum load ratingSize: 31 x 20 ... More info