Castelli Pro Thermal Cycling Skullcap, Light Black (One Size Fits All)

Made for warmth with excellent wicking while minimizing bulk under your helmet. This simple helmet liner has a raw-cut edge so it doesn't interfere with the straps or helmet cage, while the Thermoflex fabric is surprisingly warm and wicks away moisture.

PRODUCT FEATURES
Thermoflex is warm, soft and stretchy.
Flat-lock stitching.
Contoured to cover ears.
Raw-cut edge lies flat and doesn't bunch under helmet.
Reflective detailing on back.