Designed for men, this replacement hipbelt fits the REI Mars backpacks. Precurved hipbelt is designed to cradle hip bones for a natural fit and to distribute weight without sagging. Hipbelt webbing system allows you to use a natural forward pulling motion for quick, easy cinching and precise adjustment. Hipbelt pocket stores those small essentials you want at your finger tips, such as lip balm and sunscreen. Lash points on the other side of hipbelt let you attach camera and GPS pouches.