The Scheyden Precision Eyewear Collection is engineered to aerospace like tolerances. It is manufactured in the small community of Fukui, Japan, renowned for producing some of the finest eyewear in the world. Options include non-polarized or polarized, mineral glass or CR-39 composite lenses. Both lenses feature a multi-layer coating process that produces superior optical clarity and comfort. Prescription Rx lenses are available upon request.