Purchased for my cat who hated his plastic bog standard carrier and it has been a nightmare to get her inside when we travelled and took her to the kennels or vets. This has certainly made things a little easier and cosier and it helps that the sides have visibility and a stable, fleeced surface. We have kept it unfolded for her to investigate and get used to it and she often uses it at a bed. She is an average-sized cat but would recommend the large size for any but the smallest animal.