I tried local retail first but only found memory foam ( was too hard) and polyester batting ( which is comfortable but matts down quickly) The Sigurds pads are not a memory foam but a dense fiber foam. When you initially sit on them, they are firm but you sink down for support. They are better them memory foam and I could sit on one for awhile but eventually would need a softer cushion if sitting for 3-4 hours.. The best cushion would be a mix of soft fiber foam on top of dense fiber foam. I don't think anyone make them in a cushion but I have seen them in a mattress. I like the fact the the cover has a zipper. I eventually may insert a soft egg foam on top the fiber foam to give the top a softer feel. Otherwise, it looks like a quality product.