EKS Brand offers a wide variety of premium replacement lenses. EKS Brand lenses are made of the highest quality polycarbonate, which is shatter-resistant, anti-scratch, and anti-fog coated with 100% UVA protection. Tear-off posts integrated into the premium lens for quick and easy tear-off installation. Goggle Compatibility: EKS Brand GOX. EKS Brand EKS-S. BEER Optics.