Spex-Lite Heavy Sand - 15 Pound Bag The Spex-Lite Heavy Sand comes in a 15-pound bag, sufficient to fill most F-Class rear shooting bags. This premium-grade material is meticulously engineered for F-Class rifle rest bags and PRS support bags. Renowned for its uniform grain size and density, it provides unparalleled stability and exceptional recoil management, crucial for precision shooting. The distinctive properties of Spex-Lite Heavy Sand not only guarantee peak performance but also minimize bag movement and settling during when used with a quality shoot bag such as an Edgewood or Protektor bag. A top pick for both competitive shooters and hobbyists, this sand stands out as the go-to for those prioritizing precision and steadiness in their shooting setup.