Triangular foam support cushion (Leighton Buzzard LU7)

It is 74cm long, 40 cm depth and 94cm at widest point. The cover has been washed and the mark on it doesn’t go through to the foam. I bought it when I was bed bound after an operation many years ago and it’s culturing up my wardrobe now. The foam is very firm. Kept in a smoke free house.