About If you don't know what style is right for you try the Cambridge blue light blockers. These blue light blockers are a classic round eye that's not too small and not too big. With a sleek arm, these are perfect when you're working with headphones of any kind. They're flexible and easy to adjust the shape. Lens Blue Light Blocking Lens Filters 45% High Energy Blue Light Frame Dimensions (mm) Frame Width 135 Arm Length 144 Nose Bridge Width 10 Lens Height 44 Face Shape Unisex, medium to large frame size but fit well on smaller heads if you're looking for a bigger sized shade. Frame Details Injected Grilamid TR90 Frames 3 Barrel Hinges Prescription Ready Extras Lifetime Warranty Vegan Leather Carrying Sleeve Micro Fiber Cleaning Cloth