Swift fabric is four-way stretch, sweat-wicking, and lightweight Features: - Designed for: Run - 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 - Built-in liner : Built-in liner offers extra coverage - Secret pocket: stash your stuff in the secret liner pocket - Zippered pocket: Stash your stuff in this discreet seam pocket