Designed for the hardcore roadie who isnt fazed when the mercury drops the Pro SL winter cap provides excellent coverage on the back of your neck & over your ears. The combination of the peak & C0 DWR treated Thermoroubaix & windproof fabrics makes this a go to cold weather product. Multi Fabric Construction Careful clever fabric placmemt utilises 4 way high stretch windproof panels & luxurious thermoroubaix providing a fantastic balance between weather protection & warmth. Thermoroubaix with DWR M™ Thermoroubaix is a luxurious high stretch thermal fabric that provides comfortable insulation & features the PFC Free DWR M™ treatment for excellent eco friendly water repellencey. Luxurious Thermoroubaix panels with PFC Free DWR M™ treatment provide insulation comfort & water repellency Low profile stretch binding Reflective trim 90 Day Satisfaction Guarantee Construction Polyester 54% Nylon 27% Elastane 14% PU 5%