Survival i-Shield (tm) by Survival Metrics - Light Lens Restricts 99% of UVA and UVB light, and is a Polarized. Wrap-around lenses give maximum protection from all angles. Drawcord for secure, comfortable attachment and ensured retention. No arms that can break. Foam pads aid to prevent fogging and for increased comfort. Lens Color: Light lens version for allowing more light for forest and jungle situations where direct light is not as frequent.