The flexible temple extension
will hold the spectacles securely in place.
Start with the fixed section
of the temple overlapping the flexible slide section of the temple about 1.5 to
2.0 inches and adjust in or out a bit from there until comfortable. For some, the temple may require no extension whatsoever.
The amount of extension
will depend on the size of the wearer. The slide extension need not be fully extended
unless you are a large person requiring long temples of 6.5 inches. Average temple
length is about 5.5 to 5.75 inches. When the slide temple sections overlap it gives
the spectacles added strength and stability. Photograph #2