Lululemon Fast and Free Sleek black vest. Size M/L. Approximately 16.5 inches in length and 17 inches across the bottom. Adjustable front closures. Perfect for layering. Product Features Elasticated sternum straps keep your pack secure and snug as you run Attach your bicycle light to the loop on the lower back of the vest Strap on top of shoulder keeps your hydration hose in place Detachable whistle on front pocket Front drop-in pocket fits a 500ml hydration flask with a tie to keep flask in place A watertight zippered pocket for your phone, and drop-in pockets hold running essentials Hiking pole tunnel with shockcords secures poles to your back Back storage fits a 1.5L hydration bladder Hiking poles, hydration flask, hydration bladder, phone, and bicycle light not included