Think P.A.S.T. It is a recoil pad that you wear to cover your shoulder. I have had a couple of them for about 30 years now. They have been between me and the stock of some abnormally heavy thumping chamberings like my 416Rigby,458Lott,45-90Express,and 10ga "carbine.
Mine stay in my range box.
They simply WORK. --- SAWMAN