Larger capacity road TrunkBag bag, perfect for commuting, school and errands. Rigid foam insulates and holds shape. 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. Compartments: One Main, Two Side Zippered Expanding Panniers, Multi- Expanding Top. Capacity: 7.3 L / 445 ci. Max. Load: Limited to Rack Maximum Load Rating. Insulation: Rigid Foam. Material: 600 Denier Polyester. Dupont Teflon Coating: Bag Attachment, RX QuickTrack with Attached Side Panels, Added Features, Shoulder Strap, Carry Handle, 3M Reflective Strip, RedLite Clip, Elastic Top Bungees, Optional Rain Cover. Size (L x W x H): 31 x 20.5 x 16~ 25 cm 12.2" x 8.1" x 6.3"~9.8".