Fits perfectly on many factory racks, as well as after-market racks such as the HPR for Polaris & Skidoos. Features include:

Water-resistant YKK zipper
Firm foam padding so the bag retains its shape and protects contents
Inside zipper pockets
Reflective tape on sides
Quick release straps and D-rings
Reflective stretch cord on top for another place to stuff stuff!
Grab handle so you can easily carry it inside
Fits all kinds of sleds -- even fits the Kawaski KLR 650 dual-sport motorcycle -- and who knows what else!