I bought this product to use on an exercise bike. It is an improvement but I would not say its perfect. It does do what I wanted it to do, which is make the seat a bit less hard and a bit more comfortable for long exercise periods. i bought it in the store and the clerk was very helpful.
I bought the cover for my boyfriend who is new to riding in hopes that it would be more comfortable for him and therefore he would be more excited to ride. I tried the cover on my bike and it felt great. After he road he said it helped a little. I am thinking about getting one for myself. I think they are worth the cost.