The old paradigm of waterproof breathable jackets was fraught with compromise, as breathability rapidly declined when waterproof levels increased. Here to revolutionize waterproof breathable cycling jackets, the Sugoi Men's RSX NeoShell Jacket is The most breathable waterproof cycling jackets on the market. After rigorous testing in the temperate rainforests of coastal British Columbia, Sugoi made the RSX NeoShell Jacket to keep you nice and dry while breathing extraordinarily well during heavy rains with exceptionally high humidity levels. The big story is undoubtedly the NeoShell construction. Sugoi teamed up with Polartec to design the RSX NeoShell Jacket, incorporating Polartec's most advanced hard shell membranelaminate construction for unprecedented breathability for a fully waterproof jacket. This jacket uses convection the transport of air for breathability, instead of relying on diffusion of built up heat and water vapor like all other hard shell membranelaminates on the market. You'll find its active air exchange rating of 0. 5 cubic feet per minute cfm is significantly higher than the next leading competitor's, without being high enough to chill your core. In fact, this jacket remains virtually windproof blocks 99. 9% of wind, while allowing just enough passing air through to evaporate built up water vapor from heavy perspiration. This jacket features fully taped seams and a 10,000mm waterproof rating, making it more than sufficient for a wide range of conditions ranging from light rain to the heaviest showers and thunderstorms. Its detachable hood offers stowable protection from the elements, securing with hook and loop attachments. Pack interface pockets make for easy storage and retrieval of snacks, tools, and accessories when you're wearing a hydration pack on the trail. Additionally, you'll find two media compatible pockets with cord routing for seamless audio integration.