Zappos.com is proud to offer the Ray-Ban - 2151 Wayfarer Square 49 Medium (Black/<em>Crystal</em> Green Lens) - Eyewear: Part of the Ray-Ban Iconic Collection, the 2151 takes the iconic Wayfarer <em>curves</em> and reinvents it with a new updated square shape. ZYL frame. Glass lenses provide 100% UV protection. Base <em>curve</em> 6. Lenses are Rx-Able (prescription ready). Temples feature iconic Ray-Ban embossed signature. Lens printed with Ray-Ban signature. Made in Italy. Case included. Dimensions: Lens 50mm W x 38mm H Bridge 14mm