I recomend a Vimax or any other [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]traction[/words] device brand. I myself have a [words=https://track.moreniche.com/hit.php?w=113512&s=1220]JES[/words]. I wear mine on the job, before at the college. Sometimes I mount it at a train toilet, and take it off at a café. It though takes some time to get used to it and "know how" about it.
I always wear loose pants, that is a key.
You also need proper wrapping&padding.