Nylon-faced, stretchy neoprene rubber cushions any rifle or pistol scope from everyday bumps, scratches, dings, moisture, and dust. Snaps on and off quickly without using rubber bands, clips, or strings. Scopecoat(TM) stretches approximately 10% and the "perfect fit" is a matter of personal preference -- ranging between a relaxed fit to a more form-fitted one. Mfg: Scopecoat SPECS: High quality Neoprene core laminated with Nylon. Approx. 2mm thick.