The Anvil is as tough as it's name. One of the hardest working Italian-Made eyeglasses around, The Anvil is ballistically tested for ultimate protection and optical clarity. Featuring TR90 Swiss Nylon frames, The Anvil boasts a premium Carl Zeiss Impacto Lens and is Z87+ safety rated. The Anvil is a must for the Military, Law Enforcement or personal use. A unique Structa-Lite™ frame allows for all-day comfort.