The Castelli Pro Thermal 2 skull cap is made to protect from the cold while ensuring excellent moisture management, minimizing bulk under your helmet. 

• Thermoflex is warm, soft, and stretchy.
• Flat-lock seams.
• Shaped to cover the ears.
• The raw-cut edge is flat and does not bulk up under the helmet.
• Reflective details on the back.
  
• Color: Red.