Doc Johnson are onto a winner here. This is a superb masturbation sleeve that would suit most average men, fit larger penises at a stretch, and make men with less to work with feel like kings! Comparisons must be made to the flashlight look male masturbators, as the UR3 material used here is very close in function and feel to Superskin. UR3 is firmer, but equally stretchy and resilient, but does have an initial odour which some may not like. It'll wash off with a few uses, though so it's no deal breaker.
Your cock will be spoilt by the texture on the inside of the sleeve, with regular ribbing all the way down which will generate multiple vacuum points for extra sucking power with every stroke. The entryway is more restricted than some others at only about 1cm wide, but will expand to accommodate your girth up to around 3.5cm across comfortably. The entire toy is the shaft, to you have 13cm (5 inches) of tunnel before you hit daylight. Give the sleeve a squeeze as you stroke out to change or increase sensations.
I'm really impressed with this offering, and would recommend it to any man who is either A) after a compact pussy that's easier to hide than a flashlight style masturbator, or B) a man with a below average to average penis size who wants their mind blown every time they're in the mood for some deluxe hanky-panky. If there is a drawback, it's that UR3 needs a little more maintenance when cleaning, with the additional step of applying Renew powder or a dusting of cornstarch before storing it away.