Features lightweight and rugged fully waterproof 20 litre backpack from overboard innovative fold seal system uses a roll top and buckle closure to keep the packs contents dry and secure making it dunkproof ergonomic back panel and padded straps with air flow design ensure carry comfort adjustable sternum and waist straps for a tailored fit two way sealing system top or side lumbar support top carry handle reflective strips and patches super light environmentally friendly tpu fabric bungee w