The most user friendly and effective shooting aid in the industry! One bag to take the place of two! The Tack Driver supports practically any forearm size and shape; shotguns and rifles. The Tack Driver Shooting Bag was engineered to overcome shortcomings and limitations of existing long bag designs. It features the innovative Caldwell non-stretching, non-sagging polyester, plus an added non-slip, non-marring material on the top and bottom that combine to offer you the most stable, secure, and rock solid shooting rest available. Use the Tack Driver almost anywhere, from portable and permanent shooting benches to expedient positions in the field, including vehicle hoods. The Tack Driver's long, self-tightening contact surfaces grip your rifle and aid in reducing muzzle jump and felt recoil. You will wonder how you ever lived without it.