AP (Advanced Plastic) frame incorporates a simple Four Nines’ original structure that attains function necessary for comfortable glasses. AP-15 series is a model that capitalizes the quality of AP model by amplifying designs and quality from manufacturing. AP-15 series spreads Four Nines’ basic AP styles in two designs of oval and square that can be used in business scenes.
AP structure is Four Nines’ original function that works simply. Stress is collected and released effectively on the temple with the flexible range of gap applied between the temple core and the plastic temple. Further improvement to AP structure is accomplished by restudying of construction raising product quality at high degree.
Precise adjustment can be made through Four Nines’ original hinge structure. Adjustment to tilt can be fixed at ease by using the indention applied to the hinge and a preferable comfort can be performed at its basic style.
AP-15 series has two basic front designs, AP-15 in square and AP-16 in oval. They fit in any scenes and style, designed simple and thin.