The pinnacle of base layer technology with added insulation for cool-weather cycling. 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 thermal layers or light jackets as a frictionless second skin to maintain a dry warm microclimate in cool weather. 45%PA 43%PL 12%EA