Bests & Worsts Reviews from Amazon

I bought a medium for my hefty 18 lb cat. It fits well, I think I would have been able to go a size smaller. I gave it one less star because the buckle and everything is a bit bulky for a cat - but it is a harness made mostly for dogs after all. I like the support it gives him though, it's better than those thinner strap ones for him in my opinion because it pulls less on his joints and especially shoulders. He seems to walk with me more instead of going wherever he wants like he did with his previous Come With Me Kitty harness. I could tell it threw off his balance the first day or so but he got used to it quickly. The front neck area was a bit big for him, allowing him to get out once, but I secured the Velcro in more of a diagonal fashion, tighter near his head, and now he is more secure. I would say go a size down if you are an inch into the next size as I was. The buckle itself is not adjustable, and it would be more helpful and secure if it was (if the harness is a little too big). This harness doesn't stop your neighbors from making fun of you for walking your cat. Item shipped quickly.