Gold-tone metal frame with a wood-lacquer temple finish and gradient-tinted lenses. Clean with a microfibre cloth only, taking care around the raised double bridge and cage hinge detail where dust collects — a soft dry brush works better than a cloth for those grooves. Store in a hard case, as the raised metalwork can catch on soft pouches, and check the hinge screws occasionally, since the cage detail has more moving parts than a plain hinge.