Worn by the pros, the Castelli Quick-Step Alpha Vinyl Pro Team Pro Thermal Skully, with its flat, raw-cut edge, is compatible with straps and will fit neatly beneath your helmet to offer warmth. Constructed with flat-lock stitching, it will feel smooth against your head. 

Made from Thermoflex fabric, the skull cap is also soft and stretchy. It will wick away excess moisture to keep you dry and comfortable on those long winter rides, and when paired with a balaclava, will keep your head toasty in freezing conditions. 

Key Features 

• Thermoflex fabric is warm, soft and stretchy
• Made with flat-lock stitching for your comfort
• Contoured to cover ears
• Raw-cut edge lies flat and won’t bunch under helmet
• Carries reflective detailing on the back