PEI Eyeglasses by Blake Kuwahara. Color: Amber Horn, Crystal, Gravel Horn, Size: 44-25-140. In a contemporary spin on the iconic panto shape, the PEI fuses boldness with fluidity through its double-contour design. The frames play with translucency and opacity, creating beautiful contrasts that catch the eye. The use of resilient yet feather-light Japanese acetate results in eyeglasses that are as strong as they are easy to wear. Whether its a busy workday or a long evening out, their comfort lasts, and so does their style.