Goldwin Pertex Shieldair Mountaineering Pullover BlackGoldwin Pertex Shieldair Mountaineering Pullover in Black. Item made of Pertex Shield Air developed to stay active in hot and humid environments with comfort and portability required in outdoors. Its pullover design uses less fabric and is lightweight. Designed to be useful throughout spring, summer, and fall. PRODUCT FEATURES: The roomy 3D pattern features wider sleeves and a body for comfortable arm movement and body mobility. Opening the zipper at