Flash Dry™ moisture management two chest pockets for soft flasks with elastic valve stabilizer two 500ml Hydra Pak® Soft Flask™ included two lower chest pockets secure-zip chest pocket elastic loops for hydration tube two adjustable bungee sternum straps 10-liter capacity horizontal trekking-pole sleeve stretch side panels side compression straps for rib cage tension ice-axe carry on back upper and lower easy-access shelves for UTMB kit whistle included reflective logos