After staying at an hotel with a really comfy bed I had a look to see what it was and there was a polyester topper on. It was lovely.
As soon as I got home I did some research and found what I wanted in John Lewis, a dual layer feather topper.
We bought this for £140. (our mattress cost a few hundred so it was worth it - not much point in my opinion in fitting this to a cheap mattress).
Anyway. Excellent buy. It is soooooo comfortable. Nothing better than going to bed after it has been fluffed up when changing the bedding!