Key Features: Natural material – Made with an anti-bacterial, itch-free, and odour resistant merino material Temperature regulation – Regulates your body temperature in variable conditions Versatile performance – Exceptional moisture transfer and class-leading comfort How To Wear: Wear beneath a thermal jersey and jacket in the winter or under a flyweight or midweight jersey in spring/summer for year-round performance. Fit: Designed to sit close to the skin and fit under all jerseys in Rapha’s range.