『S-170T series』 is a metal brow style that seeks for ultimate functionality based on double front construction. A classical look is carefully set with refined and delicate impression of metal. Temple and brow bar are designed with flexibility to hug head by whole frame. It is a metal brow style which Four Nines evolve with accumulated function and design that matches with trend.
Temple is made of solid metal without temple tip. Embossed dot pattern made on end-piece and temple brings refined quality touch to the model. Temple is made by detailed engineering and the flexibility is made within temple which collaborates with front bar to create firm grip to the face, which brings comfortable fitting.
Double front construction is composed of face front and inner front. It well-coordinates solid design but moreover releases the stress of wearing glasses effectively. Face front collects stress of wearing glasses that directs from the temple and inner front hold the lenses without being interacted by stress. The rim is soldered to the inner front at its minimum length to correspond to different lens curve more effectively.
Yet bringing lightness and classic impression to metal brow style, durability is secured to the front by composing them with one metal sheet. Four Nines’ quality is found in its function, design and construction.