Larger capacity road Trunk Bag bag perfect for commuting school & errands. Rigid foam insulates & holds shape. Features a large main compartment plus two zippered side compartments that zip open into full panniers & expandable multi-top. Aerodynamic shape is ideal for road & fitness bikes. Compatible with RX Quick Track 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 BAG ATTACHMENT RX Quick Track with attached side panels ADDED FEATURES Shoulder strap Carrying handle Elastic top bungees 3M™ reflective strip Safety light clip Optional rain cover* 3M™ is a registered trademark of 3M Company. SIZE 31 x 20.5 x 16-25 cm / 12.2” x 8.1” x 6.3”-9.8” WEIGHT 755 g / 1.67 lb