3M™ SecureFit™ Protective Eyewear 100 Series features a sleek, sporty lens shape coupled with a patented temple design that self-adjusts to different head sizes to provide a stylish yet comfortable fit for an extended period of time.For economical eye protection designed for extended wear-time, select the 3M SecureFit Protective Eyewear 100 Series. The 100 Series offers a popular sporty lens design, adding a fresh look to the 3M SecureFit Family of safety glasses. These lightweight safety glasses feature 3Ms innovative temple design 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. In addition, 3M SecureFit Protective Eyewear 100 Series' flat and flexible temple design combines well with 3M Protective Earmuffs.