Ray-Ban RB3751 Sunglasses combine a square metal frame with crystal blue lenses for clear optics and reliable UV protection. They balance contemporary styling with wearable proportions for everyday use. Key attributes: Gray | Grigio | Metal | UV protection | Original Ray-Ban case included | Available in multiple sizes (58, 61 mm) | Square frame | Gunmetal finish | Crystal (glass) lenses | Dimensions & fit: Lens width: 58 mm; 61 mm | Bridge: 17 mm | Temple length: 145 mm | Lens height: 44 mm; 46 mm | Best for oval, heart and round face shapes | Composition & care: Metal frame | Crystal lenses