Fleece How much

It depends entirely on how wide the fleece is. Take your measurements to the fabric store and they'll figure it out for you. Buy a little wider and longer than you think you need -- some fleeces will shrink even though they're not supposed to.

Here is a link to a useful thread. I drew a picture on how to look for fleece on the bolt when you are at the store.
https://www.guineapigcages.com/forum/bedding/67073-yards-fleece-needed-liner.html

Thanks its been very helpful