Lightweight, 420 gram mesh running vest outfitted with CREE® 100 Lumen LED mounted on sternum slider. Includes 1.0 liter Hydrapak® hydration bladder.Reflective strips and piping - front & back. Perforated hex mesh shoulder pads for increased breathability. Bungee straps for shirt or shoes. Designed to ride high on the rib cage. Ultimate in lightweight race vest for long distance, ultra and relay runners.