Black Widow ATV-CB-8020 Lockable Hard Sided Rear ATV Storage Box with a Comfortable Padded Backrest Stores and carries extra cargo on a rear ATV rack, includes a comfortable padded backrest Mounts to an existing ATV rack with (4) U-Bolts (drilling required to feed the bolts through the box) Key-lockable to deter theft (includes 2 keys) Side & rear reflector tape increases night visibility Black high density polyethylene cargo shell with a plush comfortable rear backrest