The SG-YCB are premium blue light blocking safety glasseswith solid construction. Built for user comfort, they have a flexible 8-basecurved polycaronate frame. It has a clear 420cut blue light blocking lens,workable against harmful HEV blue light upto 420NM. Its lens has highprotection qualities and have K&N anti-scratch & anti-fog coatings with99% UV A/B/C protection. Its nose pad and side arms are rubberised foradditional grip and resilience. Rated to CE, ANSI & ASI/NZS, they offeruniversal certified protection. Comes with a micro-fibre drawstring storage bagwhen not in use. Spare lenses are available to purchase.