Hi drog,
I think the pad/topper that Maia linked would likely make a good choice for what you are looking for. It’s made by PureRest.
There is more information about wool pads/toppers and various sources in post #2 and 3 here (and a couple of other posts that are linked there as well) which may also be helpful.
Some of them are a little easier on the budget although wool in general is not an inexpensive material.
Phoenix