A gas mask / respirator is not included in this listing. You will not receive a gas mask.

This auction is for one pair of black S10 respirator outsert lenses. 

Genuine military grade rubber S10 outserts made to properly fit the mask with a rubber seal. They can be quickly attached and taken off the mask. These are original issue outserts and not the same as the cheap plastic 3d printed push on lenses that others are selling on Ebay.

These S10 respirator lenses will fit any sized S10 / SF10 Respirator.