Under Armour ArmourVent Storm Run Pant - Men's UA Storm gear uses a DWR finish to repel water without sacrificing breathability Stretch-woven fabric is durable, with perforated calf panels for added ventilation Armour Vent Mesh panels deliver true breathability in a light, stretchy, durable, fast-drying fabric Anti-odor technology prevents the growth of odor causing microbes Covered elastic waistband with internal drawcord