QuickTrack is a simple attachment system where a plate mounted to Topeak's Trunk Bags dove-tails securely, sliding into an extruded aluminum base plate on a Topeak rack. It's as simple as slide, click, go. MTX Trunk Bags feature Dupont Teflon-coated abrasion-resistant 2520/840 denier nylon, heavy-duty zippers, and rigid foam insolation that holds the bags shape and include carry handles, shoulder straps, reflective tape and elastic top bungees. Optional rain covers are available. MTX Trunk Bag DXP (expandable top with panniers) and MTX Trunk Bag DR (expandable top) both come with highly visible police labeling and fit a variety of Topeak MTX series racks.