This little harness is comfortable for my cat (he's a big boy) and now ...
593387
This little harness is comfortable for my cat (he's a big boy) and now he will wear it so we can go outside with him on a lease.  It is stretchy so it moves with him.  It may be a tiny bit small but the large was too big.  I'm very happy with it.
2242588
I really do like this product, but unfortunately I bought the wrong size based on other people's review about the harness being to big. My cat is a male tabby, and he is a very long cat. Neck 9 inches and bust 17 and a S/M did not work for him. I'll have to repurchase a M/L and hope that works better. He can't move naturally. The harness constructs his shoulder blade movement, that's why I believe I need a bigger size. I may even try a harness that doesn't cover his shoulder blades before I buy this product again. But I love the velcro part it really keeps the cat in the harness. I hope this helps someone else pick the right harness for their cat.
4648232
Cute, but harness was too small - I measured my cat beforehand, she has a little under 8" neck and a 12" girth (~9 lb cat), so this should have fit her, but it didn't, even when adjusted to maximum size.  If you're ordering for your cat, you probably want at least a size Small for a small to medium sized cat.

I'm VERY satisfied with my customer service experience, though.  I started a return for it, and Amazon/Puppia Int'l Inc. is refunding me AND letting me keep the harness.  I'll probably donate it to an animal shelter, or to a friend with a cat.  They went above and beyond and I really appreciate it.
1856841
I have a cat on the small side, and it fits her nicely.  The collar seems comfortable for her and we have had no problems w it.
3628597
My cat hasn't progressed to the point where we are happily going for walks, but he tolerates this harness very well.  The harness fits a medium-sized cat (10 lbs) and can be adjusted for larger kitties.  It snaps together easily and is working well at week 2.
948278
My cat was declawed and I needed something to prevent her from licking and biting her paws. We had a hard plastic one and we wanted something lighter and more comfortable. It is lighter and my cat seemed to to dislike wearing it less than the plastic one. She seemed to hold her head up and rest easier. However, she was still able to reach her front paws to lick them. The cone is a little too short to prevent her from doing that. She was able to reach her rear paws and legs as well, but not her abdomen or bottom, so this may work well for cats that have been spayed or neutered. It is very lightweight and easy to apply. The snaps are sturdy and my cat couldn't get it off. I ordered the smallest size for my 7 pound 1 year old cat and it fit snugly. If your cat is any larger or has a thick neck, I'd go for a bigger size.
4613711
I was surprised how well this fit my 18 lb maine coon cat. She didn't seem to mind having it on.  I bought this for her emergency hurricane bag.  The material was very soft and seemed to be stitched together well.  It was really easy to put on and adjust.  I hope I never need to use it in event of disaster but if I did I would feel comfortable having her in it.
355873
We have a little 7 lb. cat and, while the XS size was still too big around, when I pulled the velcro as tight as I could and attached the safety belt through both D-rings on the harness back, she was secured quite well.  This harness is far better than a harness that is just straps.  Our cat was comfortable and secure, which was a big benefit on a long trip.
2967962
We are training our cats to be Adventure Cats and needed a harness that was comfortable and inescapable. They accepted this style and wear it all day with no problems.
677590
My cat loves to go out and this product was fairly easy to adjust to size. It fits snug and the buckles were  curved to provide comfort. I used this harness with a bungee leash.
692443
I love the color of this harness and how well it sits on my meowmeow. The top wiggles to the sides sometimes but never too far. It's also escape proof much to my cats disappointment. I'm glad I got it!
3236087
I purchased two of these Maximum Comfort Dog Harnesses 6-10 lbs. for my two 6 month old kitties.  The harness itself is soft yet sturdy, and therefore comfortable.  The only negative I have is regarding the neck opening: It is NOT adjustable.
3487296
Cute cat harness. Of course my ten month old kitten was very dramatic for the first few minutes. But that changed soon when I got out Da Bird toy to play with her. It is easy to adjust to the right fit.
2110349
This was so much easier to put on my cat than a regular harness. My cat has no problem moving around with it on she loves it. Plus since I have a black cat she looks very stylish in it .
3066701
I bought this for my kitten and she is now a bigger kitty and still fits into it. The harness seems to fit comfortably around the cat's girth and straps rest over shoulders much like the seats/straps in an intense roller coaster. The material is extremely durable! I have had my harness for over six months now and it's still soft and holds it's color. The buckles are easily adjustable, even when the kitty is already wearing the harness. The only cons I would have to say is the leash, it's a bungee leash which does not make too much sense as you would want to keep your kitty at a close easy to reach distance. Also, if the rubber o-ring around the shoulder straps is not tight the kitty could possibly slip from the harness. It's great for a five minute tour around the yard or a quick trip to the vet, but I would never trust it 100% to take my kitty on a walk down the street.
393331
The medium fits my 11 lb. cat very well. Putting the medium on a 7 lb. cat, however, let her slip out of it.

For using on a cat, I found this harness _much_ easier to put on than a collar/harness using buckles. It's quicker and easier to put on which led to less squirming, resistance, and clawing. Slip the neck portion over the head, and a quick snap of the belly strap, and it's on almost before they figure out what you're doing. No buckles to catch in their fur means less discomfort to the cats, too.

I also very much prefer the way it doesn't squeeze or cut into her neck when she pulls. I'm not afraid she'll get hurt if she suddenly bolts and is snagged by the harness at the end of the leash. The pressure is distributed across the chest and shoulders and is soft, rather than cutting in at a single point like a collar.

As fussy as cats are about wearing any such thing, every one I've tried this on has been okay with it, accepting it much more quickly and easily than a standard strap-type collar/harness.
1715682
I have several cats and have tried the Kitty Holster on them all. One of my cats, a muscular male cat who is aggressive to one of my other cats, pretty much just slumps around when wearing this. We've tried it on him several times and he hasn't seemed to adjusted to it yet. I'd tried walking him on the deck but he just doesn't want to go anywhere.

My other two cats, more petite girls, get along with this fine. I wouldn't consider them tiny, but the Medium/Large size is really too big for them. One of my female cats seemed to enjoy the holster, however she got her front leg stuck. I've since ordered another holster, this time in Small/Medium. Hopefully that one will suit her better. As for my big, aggressive guy, we will have to keep trying this with him!

The quality is secure, my only criticism is that the velcro sound scares my cats. When I go to take it off them, they rush off in a panic. I don't know how the velcro construction could be remedied and still be secure, just be aware if your cats might flip out when you take the harness off them.