The Pentax Classic 4 Prescription Safety Glasses is a metal Safety Glasses with spring hinges. Available in black and tortoise, these Pentax Prescription Safety Glasses come with removable side shields and are available in 2 different sizes. The Classic 4 Prescription Safety Glasses also feature adjustable silicone nose pads for a secure fit. In addition, these Pentax Safety Glasses are prescription available and meet the ANSI Z87.1 industry standards. For more options check out our Pentax Safety Glasses collection.