The skeleton of the design concept to create a comfortable, with source protection, coercion for the integration of a strong performance of high quality! Light green environmental protection non-toxic tasteless anti shock memory materials, can effectively prevent the external shock particle ingestion, can maintain a comfortable and bright vision, in the use of state does not affect the visual sense. Can be used in wearing the glasses case. This mask according to ergonomic design, comfortable to wear and ventilation is good. Dedicated to the outdoor survival training, outdoor activities, games, film and television production cooperate with the helmet, headset