Caldwell TackDriver Shooting Rest BagThe Caldwell Tack Driver Shooting Rest Bag 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 a stable and secure shooting rest. This shooting bag is solid yet portable using the integral shoulder strap, and can be used just about anywhere, even on vehicle hoods. The long, self tightening contact surfaces grip your rifle or shotgun like a vise