I started masturbating since young, like 7 or 8, using my swim speedos (I swam since young). Always loved the feel of lycra, until one day my parents bought one for me -- and it was unlined! That's when it really happened. That's when I started using lycra to masturbate.
Then I started getting lycra shorts, also unlined (they were more common before) and continued masturbating with those. Until one day, I was maybe 10, jerking off with a red Nike super thin lycra short, and I came for the first time! I can still remember how I shot, time and time again, the smell, how hot it was against my body and the whole short getting filled with cum.