They don’t go on your cock though. They just go in your underwear and create a bulge through your clothing.  

It’s really difficult to put an extender/sleeve on a flaccid penis, but maybe if you got the kind that also wraps around your balls and get yourself hard just long enough to install it, that might work.

What about this method?

why not try it?

They’re safe, easy to use, and come in a variety of sizes and customisable styles.  

They can facilitate pleasure for both partners even if a man is experiencing ED and prevent premature ejaculation.  

The best thing to do is buy & try a variety to see what works best for your personal needs. If you look at the link below ⬇️ there are several fun options.