PATAGONIA Baggies Pants Black. Trek pants made from quick-drying 100% recycled nylon with a DWR (durable water repellent) finish and 50+ UPF sun protection. Slim-straight fit. Elasticized waistband with internal drawstring. Tapered elastic leg opening. Gusseted crotch for full range of motion. Vertical side pockets have drain-and-dry mesh corners; rear snap pocket. Double-needle, reinforced stitching throughout.