The Polish MP5 gas mask is a full face mask designed for the armed forces of the Republic of Poland to protect the user's airways against poisonous airborne radioactive dust and bacterial aerosols. The mask has a large panoramic silicon screen that offers good all-round visibility, and a speech diaphragm allowing for easy audible communication. Adjustable head straps mean that the mask will fit all head sizes, simply adjust the top 4 straps to the correct length, then hook on the bottom two straps to hold the mask in place. Mask comes with filter and storage bag. black rubber mask panoramic silicon screen speech diaphragm adjustable head straps filter storage bag one size fits all