A three because they’re pretty and warm on our tile floor.  Otherwise, they shed like crazy.  The vacuum canister fills up with wool in seconds and it comes off under your feet in big poofs.  These weren’t cheap and in expects more for their money.  I thought I was safe choosing wool as they would be thicker and hold up.  The pattern is really great though and they look great in my room.  We will love them as long as they last.