Ray-Ban RB3756 Sunglasses pair a square metal frame with blue crystal lenses for reliable sun protection and a modern, defined silhouette. Available in two lens widths, they suit a range of face sizes. Key attributes: Gunmetal | Blue | Metal | Crystal (glass) lenses | Adjustable nose pads | Metal temples | Available with prescription lenses | Square frame | Full-rim metal frame | Shiny finish | Dimensions & fit: Lens width: 56 mm | Lens width: 59 mm | Lens height: 46 mm | Lens height: 49 mm | Bridge: 18 mm | Temple: 140 mm | Available in 56 mm and 59 mm sizes | Composition & care: Metal frame | Crystal (glass) lenses | Wipe lenses with a microfiber cloth and store in the supplied case.