I purchased these glasses and had prescription lenses put in, but they didn't suit me, and I've only used them once. E5 eyevan / E-Five Eyevan P20 BK (Black) Size: 49 □ 21-147 Retail Price: ¥51,700 The front is made of Highcount acetate, a special plastic that is highly dense, resistant to deformation, and less susceptible to the effects of the human body and aging. The L-shaped hinge is the result of pursuing comfort and ease of adjustment by opticians. The p19 acetate temple is a part created by considering the appropriate weight and the area that contacts the side of the head. The overall form, constructed while pursuing strength and lightness, has a functional design with absolutely no waste. It pursues an ideal product that is comfortable to wear, light, and has appropriate strength.