Every GOX goggle uses the same lens shape and tear-offs to make lens replacement simple All EKS Brand lenses are made from the highest quality polycarbonate material and have anti-fog coating Offer the quick snap tear-off system for the GOX goggle as well as the X-GROM goggle Integrated lens tear-off posts allow the tear-offs to be loaded easily with a quick action release for a confident pull 2 millimeter clear material offers optimal clarity of vision. Sold each, unless otherwise noted