fleece beds

Hi! This is my first time posting in this forum and I was wondering if I can use this type of fabric to make a fleece hidey house on the outside of it? (The inside will have yellow fleece) They were in the dollar tree and they are a little fluffy and it says that they are 100% polyester. The...

Best places online or in store to buy fleece hides / cushions / pee pads. Any guineapig shop recommendations would be much appreciated for food or bedding enrichment toys etc. Thank you in advance