This is Aero Tech Designs’ Men’s Soft Compression Padded Cycling Underwear, a boxer-brief-style liner with a five-inch inseam carrying the Ruby chamois — dual-density perforated foams under a smooth red face fabric — inside a 79/21 polyester-spandex soft compression knit.
It hides under hiking shorts, MTB baggies, and commuter clothes so the saddle stops being the limiting factor — the wide soft waist elastic and smooth leg hems leave no lines, and sizes run small through 5X-Large.
Aero Tech Designs has designed and sewn cycling apparel at its factory in Coraopolis, Pennsylvania, outside Pittsburgh, since the 1980s, with one of the widest size ranges in cycling.
