About The Chatham are equal parts bold and poised, much like the unique combination you'll find in the Cape Cod region. These large frames boast a rounded square lens that stands out no matter the occasion. Polarized and in three unique color ways, these are specially designed for your unapologetically graceful and daring side. Lens Single Layer Injected Polycarbonate Hydrophobic Coating 100% UVA / UVB protection Frame Dimensions (mm) Lens Width 55 Arm Length 148 Nose Bridge Width 8 Face Shape For the ladies. These shades have an oversized frame so the sun's brightest rays don't stand a chance. Frame Details Injected Grilamid TR90 Frames 3 Barrel Hinges Prescription Ready Extras Lifetime Warranty Micro Fiber Cleaning Cloth