Assos
GTO Sleeveless Dermasensor Base Layer - Black Series

The pinnacle of base layer technology. Seamless, breathable, stretchable, durable, and odor-resistant—a high-performance second skin.

Everything a standard base layer does, the DermaSensor does better. Breathability, extreme stretch, compression—no other material transforms the rider like this. Its true seamless construction means that it also layers better than any other base layer, disappearing between skin and jersey as a frictionless layer to pull moisture from the skin, push it to the external climate, and actively cool the cyclist.