I know these aren't for medical use, but as someone who uses various creams and oils, and who often wears fake nails that will separate from my real nail if they're exposed to too much of that sort of thing, these have been a lifesaver. Need to use vaseline, and don't want to lift your gel nails by coating them in vaseline? They're perfect. Even if you just need to use vaseline, and you don't want to have to scrub the oils off of your hands for 10 minutes afterward. It is cheaper and less wasteful than throwing out an entire rubber glove every time that I need to stick my finger in something I don't want under my nails.

My friend uses daily at the nail salon and she is 4'11" and only size SMALL works without slipping off. Most finger cots for "finger gloves" as she called them are sized medium or a mix of Medium and Large.

I have large hands so, based on the reviews, I bought size XL for my thumb. Well, these are enormous. Definitely could have gone with a size L.

I have small hands and got these in size small after reading reviews. The size small definitely doesn't run large. To give you an idea of my fingers, the base of my thumb and pointer fingers measure a little over 2 inches wide with my pointer finger measuring over 2.5 inches in length.

I've found the size small to be too long on most fingers and uncomfortably tight around the base of my thumb (which is the finger I needed it for), but it doesn't really matter because I just pull it on and cut at the band on the bottom (the band is the thicker part that will cut off your circulation). The length is adjustable even if you don't cut it (it just rolls up or stretches out), so I wouldn't worry about length.

Because it fits so snugly on my entire thumb (and most of my other fingers) I can rip off the bottom to allow for circulation and comfort without worrying about it sliding off my finger. Since it's too long for my fingers anyways, this works well for me (it doesn't matter as long as it's long enough to go past your knuckle). It doesn't let any water in when washing dishes or taking a shower.

It's not completely comfortable because it's tight, but since I need it to be tight (i have to keep my thumbnail dry due to an injury) I'm not sure it would work as well in size medium for me. Anyways, it's comfortable enough that I forget about it after awhile.

If you're getting them for something other than keeping a wound dry you probably wouldn't need them as tight, so if you've got small hands I'd order a medium. I'd probably go with a large if you're a man with normal sized hands and you don't need them super tight.

As far as durability goes, I haven't found these to tear too easily. I've been using them while prepping food (with sharp knives) and doing various chores and I have yet to have any of them break open or tear while wearing them.

UPDATE: Apparently size does matter? i finally ran out of these and recently ended up buying them again in size medium, cause for some reason they no longer offer size small. They seem like a totally different product in size medium! The size medium is a lot more comfortable (they don't cut off my circulation), but they also seem A LOT shorter, possibly b/c they're just not tight enough to stretch out.

They might work for people with bigger fingers, but the medium size is not tight enough to be waterproof on me, so I won't be buying them again. I'm not even sure I'd buy the size small again, because like I said, it seems like a different product now (who knows if they'd send the same version!).

I wear a size 13 in rings and these fit wonderfully. I use these when making polymer clay earrings, resin projects or when I use super glue. They work like a charm! Although there was 2 gloves that ripped easily and it could have been due to the almond shape nails I have. Other than that perfect uses every time!