Windshield protection windsheild is an advanced stretch membrane fabric that offers extreme light weight with maximum 4 way stretch sportful use a 2 layer version as part of an insulation sandwich or a 3 layer version for use directly on the skin dwr water repellency helps keep you dry norain light fabric technology norain water repellent finish comes to a light weight stretch lycra174 to use as a stretchbreathable component in extremely light weight garments where water repellency is re