Slip-on: Large Stocks - 5?" x 1A 3/4" to 5?" x 1?" (1" Thick Length of Pull) Easy-to-install recoil pad helps reduce up to 70 percent of felt recoil, increase stability for improved control Atmospheric chambers produce a substantial increase in performance through uniform energy dissipation Made from LimbSaver's proprietary vibration-dampening NAVCOM material; non-slip surface for use in all harsh weather conditions Incorporates anti-muzzle jump technology for faster target re-acquisition