ULTRA LIGHT MATERIALS: The clip is made of lightweight metal alloy & PC.High grade PC lens are impact and scratch resistant,lightweight but durable. The overall weight is only 7g. So they will not give you an extra burden when using.
100% UV400 PROTECTION & HD POLARIZED LENS: UV400 protection coating can protect your eyes perfectly by 100% blocking harmful UVA,UVB & UVC rays. HD polarized lens can filter out sunlight glare,restore true color and reduce eye fatigue.