Ray-Ban RB3947 Sunglasses pair a narrow, geometric metal frame with crystal lens options for a modern-retro look. Designed for everyday wear and driving, they combine a refined slim profile with practical lens treatments including a polarized option. Key attributes: Yellow | Oro arista | Metal | Crystal (glass) lenses | Polarized lens option | Adjustable nose pads | Lightweight metal frame | Prescription ready | Geometric frame | Slim profile | Full-rim construction | Minimalist aesthetic | Archival-inspired palette | Dimensions & fit: Lens width: 54 mm | Bridge width: 18 mm | Temple length: 145 mm | Vertical lens height: 32 mm | Narrow fit | Composition & care: Frame: Metal | Lenses: Glass | Wipe lenses with a microfiber cloth; store in the supplied protective case when not in use.