HandicappedPets.Net

Not sure what this is. She's a small cat, not a kitten, so it might be too big to be a sock, but if it isn't a sock, what is it? They're using it as a purrmaid sack. Found on Petfinder.

Using Google image search, I see something called footless tights that is similar.

Maybe, or cut off leggings? Good idea, though—they’re super flexible, comfy, and rather slick.

I love it!!!

I'm trying to figure out how they put it on her. over her head? or pulled up over her legs/tail.
Barnabus won't let me put things over his head.

I wondered the same thing. Best guess would be, for a right-handed person, someone puts their right arm through the legging all the way so their hand comes out the other end. Then with that right hand they take hold of the kitty around the waist or tummy maybe? And with the other free hand (left hand) they slide the legging up off their right arm onto the cat. If the hind legs are paralyzed, maybe the claws aren't as much of a problem getting tangled when moving the sock into place? Totally guessing, no idea!