The windblock collection for extreme winter running. Fully seam sealed, wind and water proof. With stretch and breathability for the avid runner. Fabrication is Thermal Wind Block, 83% polyester/17% PU. 285 g/m, Air Permeability = 0, Breathability (MP) = 15,000, Waterproof (WP) = 20,000, Celsius, 86% polyester/14% spandex, 275 g/m. Premier windproof, waterproof, breathable, stretchable fabrication. Fully seam sealed with waterproof zipper and internal membrane. Dry-cut draft flap and pocket construction. Off-set shoulder and side seams. Side pockets, with secondary music pocket in wearer’s left pocket. Articulated arms, fitted neck, shaped cuff, and slim silhouette. 360 reflectivity.