Waterproof H2No Performance Standard rain pants made from breathable, lightweight recycled nylon are perfectly packable for a weekend in the back country. Knee-to-hem side vents easily slip on over a base layer and hiking boots to keep you dry in a torrential downpour. Style Name:Patagonia Torrentshell Packable Waterproof Recycled Nylon Rain Pants. Style Number: 5206119. Available in stores.