Design PhilosophyDesigned for the hardcore roadie who rides all winter long, whatever the weather, the updated Pro SL Bibtights have beneffited from rigorous on bike testing, resulting in a premium tight that keeps your legs warm, the wind at bay and prevents spray from the road from soaking in thanks to an eco friendly DWR treatment. . Multi-fabric Construction Strategic fabric placmemt utilises 4 way stretch windproof panels and luxurious thermoroubaix, providing the optimal balance of weather protection and warmth.Thermoroubaix with DWR M™ Thermoroubaix® is a luxurious, high stretch thermal fabric that provides comfortable insulation and features the PFC Free DWR M™ treatment for excellent eco friendly water repellencey.