Ray‑Ban RB3721 Sunglasses combine a metal Liteforce front with rubberized temple tips for a durable, comfortable option for everyday sun protection. The square silhouette and dark lenses suit a range of face shapes and bright conditions. Key attributes: Black | Metal | UV protection | Scratch‑resistant lens coating | Impact‑resistant polycarbonate lenses | Adjustable nose pads | Hinged temples | Injected rubber temple tips for grip | Square frame | Engraved logo | Polished metal front | Injected rubber temple tips | Dimensions & fit: Lens width: 59 mm | Bridge: 17 mm | Temple length: 145 mm | Lens height: 45 mm | Effective lens diameter: 67 mm | Regular fit | Composition & care: Metal (frame) | Polycarbonate (lenses) | Rubber (temple tips) | Wipe clean with a soft cloth. Avoid abrasive cleaners.