CraftOptics frames come in two sizes: Medium/Small (51) and Large (53).
These are a “one size fits most” and is by far the most common frame size selection.
The bridge and spring hinges enable it to comfortably fit a wide range of head sizes.
Choose this size frame if you don’t have any trouble finding glasses to fit or are petite.
51-19-140: These numbers refer to the width of the eyewires (51mm each),
the width of the bridge (19mm), and the length of the temples (140mm). They can be
found on one of the temples of your current eyeglasses.
The frame measures 135mm (5.31 inches) from edge to edge.
Customers typically wear frames that have eyewire sizes from 47 up to 54 mm.
Choose the large frame if you struggle finding glasses large enough to fit,
are wide in the temples, or simply have a big head.
53-19-145: The frame measures 140mm (5.51 inches) from edge to edge. The temples are longer at 145mm.
Customers typically wear frames that have eyewire sizes larger than 57.