Proudly manufactured in California, Kala brings a whole lot of fun to the retro trend. The colorful frames are handcrafted from plant-derived Italian acetate that is hypoallergenic and biodegradable. How very West Coast! Your New "No Line" Lenses, also known as Progressive Lenses, will provide a clear, comfortable close up vision, without a line of sight. The Upper portions of your lenses are clear. As you lower your eyes, the magnification increases gradually allowing you to see better at different close up distances. CR39 Optical resin. 1.50 index of refraction. Sizing and Details:
Frame Width:&nbsp130mm - 5 1/8 in
Nose Bridge: 13mm - 1/2 in
Temple Arm: 140mm - 5 1/2 in
Horizontal Lens: 40mm - 1 5/8 in
Vertical Lens: 35mm - 1 3/8 in
Face Width: Narrow

• Optical grade plastic
• Lightweight optical quality plastic
• Distortion free
• Thin profile
• Scratch resistant coating

Optical grade plasticKala