Designed to pair seamlessly with a rear rack system, the Topeak MTX TrunkBag DX features an insulated main compartment and a multi-expanding top for more cargo capacity on the go. Features: Insulated main compartment with molded EVA foam sides, top and bottom Multi-expanding top compartment MTX bags fit MTX racks only Multi-Expanding Top Large capacity main compartment and 2 mesh side pockets 3M reflective trim Elastic top bungees Includes shoulder strap and carrying handle Specifications: Pack Type: Trunk Bag (Rack Top Bag) Pack Capacity: 12.3L Mount: MTX QuickTrack Waterproof: Water-Resistant Material: 600D Polyester Dimensions: 14.2 x 9.8 x 8.5-11.4" (Expanding) Color: Black Weight: 985g