This frame size is Medium with a hinge to hinge measurement of 131 mm. Ideal for average faces. FRAME FEATURES: RB0840S Mega Wayfarer sunglasses feature a square, transparent red bio-acetate frame and dark grey bio-nylon lenses. SUSTAINABILITY: Bio-based acetate frames have 65% bio-based carbon content representing ratio of renewable sources such as cotton, wood pulp, cereals, beet and sugar cane to fossil sources. Bio-based nylon lenses have 40% bio-based carbon representing ratio of castor oil to fossil sources. 100% UV PROTECTION: To protect your eyes from harmful UV rays, these Ray-Ban sunglasses include lenses that are coated with 100% UV protection. CASE & CLEANING CLOTH INCLUDED: This pair of Ray-Ban sunglasses come with dedicated sustainable packaging, made with recycled materials. VISIT THE RAY-BAN BRAND SHOP: Click on the Ray-Ban link above the product title to shop the entire Ray-Ban sunglass and eyeglass assortment.