3M Peltor Maxim 2X2 Air Seal Goggle uses and advanved dual lens design for improved sight and comfort. The tough polycarbonate lenses are set in a high impact nylon frame that boasts excellent orbital eye coverage and a wide field of vision. The frames are also vented for reduced heat and fogging, yet still protect the user from the sun, dust and wind. The Easy Lock lens replacement system allows fast and easy changes to each of the 3 available colored aniti-fog lenses.