... eyes and facial skin. The mask is designed for use by military, police and civil defense and can also be used ... 700 grams.(7),Storage life: More than 8 years.USE AND MAINTENANCE(1),The MF 11 mask is divided into ... below the value, the mask is too large.(2),Use of drinking device. A special canteen cap should be ... cool dry place. If the masks are not in use for a longer time, a support should be placed ...