UA Storm technology repels water without sacrificing breathability. The windproof design protects you from the elements. Durable, lightweight stretch fabric provides better mobility and comfort. The 4-Way Stretch technology allows for better movement in every direction. An improved expandable center pocket on the back is water-resistant to keep your phone safe. Soft knit belt with internal drawstring for a secure fit. Zippers at the ankles for easy dressing and undressing. Reflective details for running in low light. Tapered leg cut.