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. Encased elastic waistband with internal drawcord. Open hand pockets with internal right-side powermesh phone pocket. Reflective details for greater visibility on low-light runs. Inseam: 5".