Polycarbonate lenses - If you're involved in intense sports or even if you consider yourself an active person these are the lenses for you. Mauji Jim's Polycarbonate sunglass lenses are extremely lightweight, impact resistant, and offers Clearshell© technology which is their scratch-resistant coating. To put the weight into perspective polycarbonate lenses are about one-third the weight of traditional glass lenses. Sometimes I even forget I have them on. Another plus about these are that the color of the lens is not just tinted on each side, it's actually embedded throughout the entire lens.
SuperThin (ST) Glass - If your days of intense sports are over or you're just looking for a casual lens these are it. Ideal for driving and casual wear these lenses offer superior optics and durability. To compare to conventional glass lenses Maui Jim's ST Glass are much lighter and thinner coming in at 1.8mm versus 2.2mm. There's also a scratch-resistant coating to protect your investment.
Maui Evolution - If you can't quite make up your mind between the polycarbonate and ST Glass lenses you have a third option - Maui Evolution sunglasses. Maui Jim has taken the best attributes of their polycarbonate and SuperThin Glass lenses fused them together to create the Evolution series. You'll get super lightweight glasses that are both impact resistant and scratch resistant. Just like any other Maui Jim sunglasses these offer superior optics and are durable.