Now here's clever - this stretchy, two handled erection ring is designed specifically for use with an erection pump.
Just stretch the enhancer over the opening of your pump, use in the normal way, and when you've achieved your erection, carefully slip the enhancer off the pump and onto the base of the penis, to maintain it!
Comes with illustrated instructions. The central ring stretches between 1 and 1.25 inches in diameter.