Northwave Extreme Winter Road GTX BootsFeatures: Sole: Carbon Light Upper: Gore-Tex® Sierra membrane Closing system: S.L W.2 + Power Strap Heel: Integrated Heel System Footbed: Special G.T.X Gore-Tex Sierra Membrane: Northwave can boast the exclusive rights to being the first brand to launch cycling shoes with Gore-Tex®. The Gore-Tex® membrane provides a total protection from water and extreme breathability so as to guarantee optimal comfort during exercise in all weather conditions. The microclimate created inside the shoes allows you to face even the longest trips without straining and overheating the foot: Northwave and WL Gore® a perfect match for your needs!Dsc-Double Shield Construction : Extreme winter stands out for the revolutionary Double Shield Construction (DSC). The overlap of two different uppers, anatomically integrated with each other's and designed to work together, ensure an absolute protection against water and cold. The outer layer blocks the weather, whilst the inner works by creating a microclimate ideal for the foot. All the benefits of a shoe cover, none of the weakness of a shoecover.S.L W.2 Micrometric Closure: Lighter, smaller and more accurate. The closure of the shoe can be adjusted whilst pedalling thanks to the "step by step" button. The release side button makes it easy the fully open of the shoe.S L.W 2 : The micrometric system S.L W. 2 (Speed Lace Winch) represents the evolution of the closure system. Maximum precision and modularity. The innovative step by step closure means you can tighten and enlarge the fit in a few moments. The side button provides a dual function: by pressing, it features a micrometric release and lifting it allows a complete and immediate opening of the shoe. More lightweight and thinner. The dial has been completely redesigned in size and weight, resulting in it being significantly lighter and thinner. The external covering in soft touch material also makes the grip more effective. The ergonomic shape of the S.L W. 2 ratchet follows the anatomy of the foot to make it really comfortable. The S.L W. 2 ratchet is easily replaceable. The cables come from the best technology derived from the world of sailing Speedlight 3D Sole : Performance and lightness. The nylon chassis is filled with fiberglass and co-injected to the outer polished TPU shell. The rubber studs provide excellent grip even on the most slippery surfaces Buy Northwave Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.