Made of 1000 denier Cordura, corners are reinforced with vinyl truck tarp material. The two inch straps are stitched all the way around to support the load. An O ring has been put on the front of each bag to run a strap under the belly. The buckles on the front accomodate our top packs.26w x 20h x10d.(click to enlarge photo). Made by Buckstitch Canvas.