Not to sure on the fabric as my bulge from my penis is large (not bragging) under my body and needs a deep cut out otherwise I go numb and can’t pee without pain. I guess spinning 180rpm after 400k doesn’t help with this.
Incredible!
@ChasnotRobert started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.