The Fox Youth Airspace/Main II Pre-Moulded Spare Goggle Lens is packed with features... Specifications Include: 8 Pin Lens Retention System keeps the lens securely attached to the frame 1.4-1.8 mm pre-moulded polycarbonate lens offers 100% UVA and UVB protection VLS (Variable Lens System) Design - For use with Fox Racing Airspace II and Main II goggles Genuine Fox Racing replacement part