Castelli Pro Thermal 2 Cycling Skully Cap - Black BackInStock-04-08-2026 Stack height: <20mm

Stack height: <20mm

Eyewear Port at front and rear: recess at the front and rear of the helmet to hold eyewear in a secure and aerodynamic position while riding or during stops

QR Handlebar Mount is suitable for use with the Switch

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We tested various patterns

Castelli Pro Thermal 2 Cycling Skully Cap - Black BackInStock-04-08-2026 Stack height: <20mmThe Pro Thermal 2 Skully will add a touch of warmth under your helmet on a chilly day, while feeling comfortable against your scalp. Made from soft, stretchy material for a universal fit, it is constructed with flat lock stitching and raw cut edges for a smooth finish. Features: A warm skull cap that won't bunch under your helmet Made from soft, stretchy Thermoflex material With flat lock stitching and raw cut, lie flat edges Reflective detailing adds