Castelli Aero Long Sleeve Jersey Black/White, L Material: [front] ThermoFlex; [body] Warmer (100% polyester); [waistband] siliconeFit: slimPockets: 3 rearZip: full-lengthWindproof Rating: wind-resistantSPF Rating: UPF Rating: Recommended Use: cold weather cyclingManufacturer Warranty: 30 days