Good against forgetfulness

My husband needs for energy while increasingly reading glasses.
And since he already is anyway somewhat scatterbrained and happy times misplaced something he had in his hand three minutes ago, my "extra" glasses was now looking too much and I have him summarily this practical 4-pack eyewear straps (?, are called so? ordered).
3 x black, 1 x neon yellow. Who should bear the because ???
That gets my hubby as a punishment when he has the 3 black verschusselt :-)

The tapes are very stable, almost a bit too thick (shoelaces strength) and, unfortunately, a little short, 10 cm longer would be great.
They have small mini rubber loops that you simply can slide over the temple and keep them automatically and fixed at the ends. Since nothing slips.

Is a pity that while there are small rings, which could reduce the rubber loops, but these can not be locked permanently. Therefore, you can not really choose the seat belt and the spectacle must push them close to the glasses up.
There are 1 star deduction, because we wanted to attach the bands rather in the middle of the temple, then the tape would be a little longer and you might get 2 birds with 1 flap :-)