New proprietary fleece design backed by a matrix bond that limits air permeability to 20 CFM.

Created for trail runs and hikes where wind can rob you of precious body heat The North Face WindWall™ 1 Jacket features a proprietary fleece design that's bonded to a special matrix wall and mesh lining to allow a trace amount (20 CFM) of air permeability giving you a comfortable balance between wind resistance and breathable vapor transfer. With the exception of handwarmer pockets the streamlined construction is clutter free and layers well beneath a waterproof shell.