I'd have to say I'm above average in the size department, I am by no means a donkey ****, but I do give my wife plenty of pleasure. I purchased the Girth Rings hoping to spice things up and give the wife an "enhanced" experience with my ****. The opening to the sleeve is very small, you can barely get your finger in the hole. It would take some serious stretching to get this thing over my ***** *****. Using the larger of the two sleeves, I first pulled the opening apart by inserting my thumbs and index fingers at each end, far enough apart to slip over my ***** *****.(not an easy task) Once the head of my ***** passed through the other end, I then released my grip.
OUCH!!! This thing clamped down on my **** like a vice-grip; it was very painful. I tried to slip my fingers back into the hole to stretch it off my ****, but no luck. Fortunately, my ***** quickly went flaccid (mainly because of the pain and this thing squeezed the blood out of my ****)and was able to work it off my *****.
I don't see how this thing could be classified as a ***** sleeve, the opening is too small. Unless your ***** ***** is the size of an index finger, I say go for it. These things would make a good toy to slide over a finger and ********** your partner.
I would never recommend placing these things on your ****, unless you're into some serious pain or have a **** the size of an index finger.