Got about 2 dozen cock sleeves here.
Some are just the roll-ons, but prefer the ones with the loop.
Cheap as anything on Aliexpress & ebay, & the reason for so many is to find the right fit.
These ones are good, cause they don't slip off.
Condom Contraception Transparent Black Shackles Extension Sleeves Head Reusable | eBay
And if you put them on dry, you don't feel much till a bit of precum starts to leak out, then they slip on your head a bit.
Best thing about this is that my wife can get the really hard poundings she like, without me lasting less than a minute.
Got 2 huge ones too, one that's 10" and about as thick as my wrist.
It's a favourite some times.
Will find some pics later if others are interested.