Blackfin Prometheus Sunglasses combine an ultralight titanium frame with a bold geometric design for comfortable, all-day sun protection. Ideal for shoppers seeking a precision-crafted, statement sunglass with reliable optical performance. Key attributes: Black | Titanium | Ultralight wear | Hypoallergenic | UVA/UVB protection | High optical performance | Shortenable temples with patented tips | Ultraflexible beta-titanium temples | Adjustable nose pads | Includes hard case and microfiber pouch | Square geometric frame | Front milled from a single titanium block | Hand-polished finish | Laser-engraved serial number | Dimensions & fit: Lens width: 51 mm | Lens height: 38 mm | Bridge width: 24 mm | Temple length: 150 mm | One size | Composition & care: Titanium | Beta-titanium (temples) | Nylon lenses | Clean lenses with a microfiber cloth and lens cleaner; store in the supplied hard case when not in use.