A non-hormonal, reversible and non-toxic male birth control could be a step closer, with scientists successfully targeting a protein that's crucial in making fertile sperm. Knocking this protein out for a period of time would give men control over their protection window, much like oral…
There’s a fair amount of talk in the comments for and against condoms. Has anyone considered a custom fit silicone penis sleeve as a more pleasurable alternative?
They aren’t an alternative.
From the website you linked’s own FAQ
Yes a condom can be worn under a sleeve. Wearing one over a sleeve will not help if you are wearing it as a form of contraception.
I think they have to say that.