Block windchill without tallying up a bunch of extra ounces. Mountain Hard Wear's WINDSTOPPER® Vest wraps your upper body in a lightweight and windproof layer of WINDSTOPPER® Microfleece face fabric without trapping vapor close to your skin. The stretchy Lycra® binding around the arm holes and waist hem accentuate your mobility without catching or chafing on inner layers. The Mountain Hard Wear WINDSTOPPER® Vest is an excellent choice for climbing hiking and trail running on blustery days.