- Collection:SHEET TITANIUM - A combination of 100% pure titanium and beta-titanium. Named after the skilled archer from the seven samuari Gorōbei Katayama. This is a streamlined sunglasses frame that is on point in terms of being modern and trendy. Gorō comes in four color combinations. If you are looking for a real eyecatcher we would go for the Mat Metallic Orange with Chrome Flame lenses.