Red Wing Heavy Duty Safety Glasses provide all-day protection in even the most demanding conditions and include an adjustable strap or rubber-tipped option. Made with no metal parts and a non-conductive dielectric design, they help protect eyes from electric arcs. The removable foam gasket, soft temple tip and soft nose pad provide a slip-proof, comfortable fit. These glasses are made of optical grade 100% durable polycarbonate and finished with an anti-scratch hard coating with added anti-fog advantage and protect against 99.9% of harmful UV light.