Castelli Viva Thermo Skully AW17

The uses a thin Thermoflex fabric that is extremely warm, yet provides excellent moisture management and easily fits under your helmet. The raw-cut edges eliminate bulk under your helmet straps so there’s no uncomfortable bunching up, meaning you can just concentrate on enjoying the ride Features: Thermoflex is warm, soft and stretchy Flat-lock stitching Raw-cut edge lies flat and doesn’t bunch under helmet Size: Univeral Temperature Range: 0°-12°CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.