Double Side Aspheric (DAS) lenses are suitable for the recent trend of big frames because they provide a clear view of the eyes, even in the peripheral zone.
DAS lenses are the flagship lenses of ASAHI-LITE, a Japanese company that specializes in high index materials and thoughtful design.
Another feature of DAS lenses is that both sides have an aspheric surface, which makes the lens thinner and lighter compared to conventional lenses.
Additionally, the less distortion feature of DAS lenses makes your face line look more natural.