Thinoptics Readers (without a full frame; that were not purchased separately from any pod, case, keychain, etc.), are the only Readers durable enough to be backed with a lifetime guarantee.
The guarantee includes only reading glasses that were purchased with any kind of Pod , Case, Keychain etc… (one replacement for every purchase) that warrants your glasses against defects, workmanship and failures under normal use forever!
The guarantee does not include 1 or 2 reading glasses that are
purchased seperately as stand alone products as these products are sold to you as a routine service.