After an eruption one of the possible hazards is widespread ashfall. The Civil Defence Emergency Management Office says; If you have to go outside use protective gear such as masks and goggles and keep as much of your skin covered as possible. Wear eyeglasses, not contact lenses as these can cause corneal abrasions.
These masks are fitted with a valve for lower resistance breathing. They are moulded with a metal noseclip and closed cell foam nosepiece for a superior seal.
They have non memory elastic to suit all head sises.
There are 10 units in each box.