Caldwell Tackdriver Shooting Rest Bag - The Caldwell Tackdriver supports almost any rifle or shotgun and features a self-tightening surface that grips your rifle and reduces felt recoil and it includes a shoulder strap for carrying convenience. You can use the Tack Driver almost anywhere, from portable and permanent shooting benches to makeshift positions in the field. Self-tightening surface grips your rifle and reduces felt recoilNon-marring, non-slip surface will not harm your rifle's finishSupports almost any rifle or shotgun typeShoulder carrying strap includedPre Filled from the factory