These compact, folding reading glasses fold to just 1.3cm high and fit into a slim, protective plastic case that you can carry anywhere.
 
They are able to accomplish this because of the unique, 90 degree, spring-loaded hinge that enables them to fold down to only 1.3cm (1/2 an inch) high
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These versatile folding reading glasses also adapt to any size face with this slingshot hinge.
