3M SecureFit polycarbonate glasses. They are durable, tight and flexible with settings to fit the wearer. They offer a better fit than traditional "one-size-fits-all" glasses that are rigid and inflexible in design. The tight fit also helps keep the glasses firmly in place while the wearer looks up and down or from side to side, eliminating the need to reposition the glasses frequently due to head movement. The contact points of the padded pins and the soft, adjustable nasal pads provide greater comfort for prolonged use. The secure, tight fit helps keep the glasses in place without slipping.