M size pet circle with a sliding door for easy pet entry and exit. - Model Name: friend circle Slide Door M - Brand: GONTA CLUB - Features: Sliding door for easy pet entry and exit - Size: M - Features: Anti-wobble lock I bought this in a hurry after rescuing a kitten, but it didn't work because the cat escaped immediately. I used it for about two weeks and then stored it. I will also include a net that can be fixed on top.