I purchased one of these new (at least to me) air inflatable recoil pads used, on a pure whim. I'm always looking for a new gimmick to reduce recoil. It fit my Ljutic PFS perfectly and the price was right. I installed it yesterday, then took it out to the range and shot 100 rounds. WOW, I could not believe the reduction I felt in recoil. I am so recoil sensitive I shoot a release trigger, use a soft PFS, and shoot light 1 once loads. All of these things help with my inability to keep the gun in my shoulder. But, with the addition of the Air Pad, recoil has almost disappeared. It didn't ever seem as if the gun moved back, jumped, or have any type of movement. I was surprised and impressed. It comes with a little hand pump with a needle valve to pump air into it, with a pressure adjusting valve. I put a few squirts of air in and made it about half as soft to squeeze than my Kick-ease pad. It worked great. I don't know how long it will last, but it appears to be made out of quality material. The guy that I bought it from said he only shot one box of shells using it, so it was like new when I receive it. If your recoil sensitive like I am, try one of these, I think you will be pleasantly surprised, I was. Oh! By the way, I am not affiliated with the company, nor do I even know who designed it.