Brand and high quality durable water-resistant canvas and rest bag construction for long lasting performance. Sand filling chutes with hook-and-loop closures and a clip to attach bags when not in use. The airgun rest bag can be filled with silica sand, rice or ground corn-cob media (filling not included). Transport both the front and rear bags easily using the quick connect system. Use scenarios - Bench precision shooting: use the front and rear bags to stabilize the airgun for repeatable shots. Fill with media to achieve the desired weight and balance. - Outdoor or field use: place on grass, dirt or uneven ground and fill with media to create a stable rest that adapts to the surface. - Easy transport between locations: quick connect system lets you move and carry both bags together as a single unit.