UA CoolSwitch brief uses an exclusive coating on the inside that pulls heat away from your skin, so you actually feel cooler .Tough, lightweight HeatGear fabric, with all the performance benefits of UA Compression .Built-in brief for added support .4-way stretch construction moves better in every direction .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 .7" leg zips .