Artificial Foreskin titled SenSlip. There is also a video that explains with visual reinforcement, what happens to the glans once the foreskin is removed. You can view the video here.
Drawbacks: it is expensive. This device only lasts so long, and you must continue to buy them one after another. It is an exciting concept, and it is promising. But I wouldn’t advise using this as a permanent replacement for foreskin. There are also more economical methods for temporarily protecting your penis called the ManHood. Hell, make one yourself.