Castelli cares about body temperature—which is why they introduced the Uno Plasma Base Layer Shirt. Technical enough to extend the temperature range of your regular kit, and stylish enough to wear on its own, the Castelli Uno Plasma Base Layer Shirt is like purchasing a lease on comfortable weather.

• Nano-plasma fabric moves moisture away from skin so you stay warm and dry
• Minimal seams for ‘second-skin’ feel
• Designed for and tested by the Cervelo Test Team