This is a 22.4lb (10.3kg) capacity refillable standbag. Features include : extra rivets combined with double stitching and interior bias binding for maximum strength. Double handle s on both top and bottom provide more comfort. High quality hook and loop closure to assure that the contents stay where the y belong. Metal hanger provides more strength. Stand bags are necessary safety items. The y prevent light stands from tipping over, support a camera and also act as counterweights for booms.