"Alto" refers to the low range of female voices and the mid-low range of musical instruments. The beautiful, flowing, single-line temples of moderate thickness and the large earrings provide firm support for the head, creating an outstanding sense of stability. Furthermore, the balanced design at the back of the head makes the glasses less heavy even when worn for long periods of time, and they remain comfortable to wear. This new collection embodies "harmony and tolerance," befitting the name Alto.