Ultra-light, stretch-woven fabric for totally unrestricted movement .Internal mesh liner helps moisture escape & adds breathability .Mesh side panels for added ventilation .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 .Encased elastic waistband with internal drawcord .Hand pockets with internal right-side powermesh phone pocket .Reflective logos for greater visibility on low-light runs .