3M SecureFit Safety Glasses 500 Series features a stylized lens shape with temples that automatically self-adjust to help provide a secure and comfortable fit. For contemporary eye protection designed for comfort and compatibility, use 3M SecureFit Safety Glasses 500 Series. These safety glasses weigh just 22 g and offer a sleek, stylish look. 3M Pressure Diffusion Temple Technology offers a comfortable fit, with slotted ribs that provide comfortable pressure equalization, allowing the temples to flex and self-adjust to the size of the wearers head. The design of these safety glasses applies pressure to the less sensitive back of the head instead of the temples, achieving a comfortable fit even during rapid head movement. The adjustable ratchet temples offer even greater customization by allowing user to adjust the lens for facial features and eyeglass position. These glasses combine well with ear muffs. Sleek and compatible 3M SecureFit Safety Glasses range with adjustable ratchet temples to adjust the lens for facial features and eyeglass position, designed to help improve the positioning when worn with respirators 3M's innovative SecureFit Pressure Diffusion Temple technology design features slotted ribs that provide comfortable pressure equalization. The temples flex and self-adjust to the size of wearer's head 3M Scotchgard Anti-Fog Coating provides superior anti-fog and anti-scratch properties (available on selected models) Protection against UV up to 400nm Wraparound design improves the security of fit and prevents slipping Flat and flexible temples combine easily with earmuffs and provide solid side protection Easy to clean Foam gasket available to help limit eye exposure to debris