Mykita Riku Sunglasses combine the brand's NO1 collection craftsmanship with a classic aviator silhouette and patented spiral hinge for secure, adjustable wear. Key attributes: Black | Stainless steel | Polarized Pro lens option | Patented spiral hinge | Individually adjustable fit | Silicone temple tips and nose pads | Includes branded eyewear case and cleaning cloth | Pilot (aviator) silhouette | Dimensions & fit: Lens width: 55 mm | Bridge width: 21 mm | Lens height: 48 mm | Temple length: 145 mm | Wide fit | Composition & care: Stainless steel (frame) | Silicone (temple tips and nose pads) | Clean lenses with a microfiber cloth and, if necessary, a specialist lens spray (e.g., Zeiss). Avoid harsh chemicals and solvents. Store in the supplied case.