Layering is the most efficient way to stay warm. This lightweight Windstopper jacket is your ideal first line of defence against the elements. Lightweight fabric for outer surface+ Windstopper membrane+lining Total windproofness: protect your bodys warmth from chilling effects of wind & weather Maximum breathability: prevents overheating & perspiration build-up by allowing moisture vapor to easily escape. Packable: compresses & stores easily when not in use Water resistant; sheds rain snow & dries quickly Full front length zipper with inner zipper flap for extra wind/water repellency Reflective piping on back Inner strap for hanging