This fits my cat really well (17 lbs ragdoll - bought medium size) and the hood is the smallest I’ve seen, plus since it’s clear, it’s less annoying for him. He can move comfortably and more naturally than any of the others I’ve tried on him. It’s very thin, so I think that makes it less intimidating also.
The main downside is it seems pretty flimsy and I am really careful unsnapping it because I think it will tear if I’m not. The snap closures around the belly allow for two sizes, but I’d prefer maybe a velcro closure because it can be really difficult to get the snaps done while an animal is moving. (maybe dogs are better at standing still?!). And there’s not really a good placed leash hole for an animal in a harness - more for collar leashing.