BUILT TO WORK: Tough scratch resistant polycarbonate lens protects your eyes against airborne debris and impact without restricting your vision DESIGN: Soft PVC frame gives a close, comfortable fit to your face with no skin irritation OPTIMISATION: Indirect ventilation protects your eyes against liquids and dust entering the goggle but allows air in to keep your face cool ERGONOMIC: Adjustable elastic headband gives a comfortable, unrestrictive fit CERTIFICATION: Tested to CE EN 166 standard - Blackrock safety products are rigorously tested and certified so you can rest assured they are legitimate and will keep you safe. Check the Declaration of Conformity in the image gallery, which includes the certificate number.