Four-way stretch Swift Ultra Light fabric is an airy, lightweight fabric woven to wick sweat and provide airflow—seriously, it’s like being in the buff four-way stretch lightweight sweat-wicking woven for airflow Features Designed for: Run Secret pocket: stash your stuff in the secret liner pocket Zippered pocket: Stash your stuff in this discreet seam pocket Shine-bright : Reflective detail helps keep you on the radar in low light Continuous drawcord: Won't get pulled inside or lost in the wash Inseam: 4" Low-rise: Keeps you feeling cool yet covered Built-in liner : Built-in liner offers extra coverage