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How to measure your prescription frames for DUCO sunglasses:
1- Measure the widest part of your prescription frames left to right, this is the "width". Next measure the height of the lens with frame included.
2- Choose the DUCO frame (below) that is slightly larger in width and height than your frame measurements.
If your frame width is less than 5-3/8inches,height is less than 1-5/8inches, please buy common size.
If your frame width is longer than 5-3/8inch, shorter than 5-1/2inches;height is less than 1-5/8inches, please buy plus size.
If your frame width is longer than 5-1/2inches,OR height is larger than 1-5/8inches,please DON'T buy it.
Glasses X1, glasses case X1, glasses cloth X1,glasses bag X1.
Visit www.amazon.com/shops/ducoglasses for more information on DUCO glasses and extensive line of products.