Massive Foam block made of high strength, black Plastic with 2 Longitudinal milling. That Material, Foam block XNA-3600, is environmentally friendly and harmless (Data sheet will be Provided upon Request). The Block consists of Layers laminated to one another and is stiff and robust. This variable Zeroing and Gun Rest is the perfect Helper of all Situations, in which one has a solid Edition for the Long weapon needed: whether Hunting, at the Shooting range or at Home for the Air gun. Dimensions: (BHT): 18 x 15 x 23 cm.