Center-front waistband UA Speedpocket expands to keep your goods totally secure; it's water-resistant & bounce-free. Smooth, stretch-woven fabric is ultra-lightweight & lets you move. Internal mesh brief liner helps moisture escape & adds breathability. Power-mesh side panels deliver superior ventilation. Material wicks sweat & dries really fast. 3 pockets along back yoke, 1 with secure, zip closure. Side-vent hem. Reflective details deliver greater visibility on low-light runs. Inseam: 4".