4XL - Men's 1/4 zip windshirt made of 5.7 oz. 100% Waterproof Poly. Because we want to offer you the ultimate in comfort, quality and style, we didn't make this 1/4 zip windshirt water-resistant, we made it waterproof (seams are not sealed). The middle layer has microscopic holes which allow the fabric to breath, but are too small to let water through. Made in the USA.