This frame size is X-Small with a hinge to hinge measurement of 122 mm. Ideal for narrow faces. FRAME FEATURES: RB3857 Frank sunglasses feature a square, black frame and green lenses. 100% UV PROTECTION: To protect your eyes from harmful UV rays, these Ray-Ban sunglasses include lenses that are 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.