The Universal inside the waistband series Holsters are crafted to fit multiple pistols of the same size. The IWBL is designed for large-frame pistols, the IWBM for medium frames and the IWBS for small frames. Simply slide the holster inside your pants until both belt clips securely grip your belt. The position around your waist can be adjusted to your personal preference. Retention is maintained by the pressure from your belt against the holster shell, while the flexible backing conforms to your body for added security. The non-slip surface ensures the holster stays in place. Note that these Universal IWB series holsters are compatible with a variety of pistols and do not feature a standard passive retention mechanism, so avoid inverting the holster when not in use.