Water-proof Zippers and Their RelevanceWhen we consider what maintains us dry in a tornado, we typically credit the coat material or the outdoor tents material. However there's a tiny, typically overlooked element doing several of the heaviest lifting-- the water-proof zipper. Whether y

Water resistant Zippers and Their SignificanceWhen we consider what maintains us completely dry in a tornado, we generally attribute the coat textile or the outdoor tents product. Yet there's a tiny, usually forgot part doing several of the heaviest training-- the water-proof zipper. Wh