Wiebad Modular Tac Pad Comes unfilled so you can adjust it to your preference Eliminates space in the body for unsupported shooting and functions extremely well as an all around rear bag Designed to increase the area between contact points such as your elbow and knee when shooting from a kneeling position Dimensions: 9 x 11 x 4; Weight: 1 lb; easy to fill, empty and clean Made in the USA