Review on LONG Polarized Sunglasses Driving Protection by Monty Barganier

The description said the glasses were "unbreakable". I assume they meant that only lenses can be shatterproof? I've only had them 6 months and have put my sunglasses back in their case after taking them off, never dropped or abused them, but now there is a crack in the frame of the sunglasses where the temple is screwed in. on the frame, which is about to break off and I have to throw it away because it can no longer be repaired. They were great while they lasted, but they are definitely NOT UNBREAKABLE!