3M SecureFit Safety Readers 400 Series features a lightweight design with a rimless polycarbonate lens, 3M Pressure Diffusion Temple Technology, wide flexible temple arms, soft, adjustable nose pads and an additional reader part.For comfortable eye protection with reader option to see small details clearly, use 3M SecureFit Safety Readers 400 Series. Our black/green frame safety glasses weigh just 19 g and have an additional +1.5, +2.0 or +2.5 dioptre part at the bottom which magnifies what you’re viewing. They feature 3M Pressure Diffusion Temple Technology that allows dual-injected padded temple touchpoints to naturally adjust to an individual’s head size, giving the wearer a secure and comfortable fit. Soft, adjustable nose pads provide an even greater personalisation of fit and reduce slippage from head movements. Wide flexible temple arms over the ears provide solid side protection and work well with ear muffs. The wraparound design gives the user a wide field of vision. The rimless polycarbonate lens comes with an anti-scratch/anti-fog coating for increased durability and visibility.