These offer offer superior comfort and impact protection. The black frame is fully adjustable both in length and angle while the clear polycarbonate lenses have a scratch-resistant coating to keep your vision clear. In addition, the one-piece polycarbonate lens has built-in side-shields to provide an even greater level of impact protection. All lenses are polycarbonate which absorbs 99.9% UV A and B light. Only Safety Goggles give the impact and splash protection required for working with chemicals.