Expandable, low-profile waistband pocket to keep your phone secure & safe. Tough, lightweight HeatGearfabric, with all the performance benefits of UA Compression. Built-in brief for added support. Material wicks sweat & dries really fast .Anti-odor technology prevents the growth of odor-causing microbes. Easy-entry, overlap powermesh side pockets for gels/keys/phone/etc. Reflective logos deliver greater visibility on low-light runs.