This set of slides is great. Does exactly what it has to. Good, clean material. Fits onto most fingers properly.
If you're a person who prefers to use a slide on your middle finger, you may want to look at a slightly bigger size, because the long slide especially can be a little tight, but that's the only downside I can find.
Even if you have fairly fat, sausage like fingers these slides fit snuggly and comfortable on the pinky and ring finger, so I imagine for someone with "skinny" fingers it would fit normally and just fine.