I would not buy that..or any....I did and ended up throwing it away.
They run so small. The largest one is still tiny. It sounds like a great idea, but in reality a towel would do a better job. It is so hard to try to get a resistant kitty into it! just about impossible. Maybe a docile one, but then you would not need a restraint..sorry, I really wasted my money on not one, but 2!!! I was trying to be positive about them but neither worked out...they are very hard to pit the cat in, nevermind finding one to fit!!
Good Luck! it you find an easy way, please let me know!!