This Boston model is characterized by its color and smoothness. The temples, made of lightweight and durable β-titanium, significantly reduce pressure, providing a comfortable fit that prevents fatigue even after extended wear. The engraving on the bridge and temples adds a touch of elegance, and the color and luster are beautifully finished. 【Materials】 Frame: Celluloid Temples: β-Titanium Lenses: CR-39 Lenses 【Size】 48□21-145 Overall Length 142.5mm x 44.5mm 【Accessories】 Eyeglass case Eyeglass cloth 【Lens Details】 Ultraviolet (UV) Cut Rate: Approximately 99% Blue Light Cut Rate: Approximately 35%