Excellent original quality.
Deep red. (Acquaintance ordered cheaper in China, but it could be a fake, since the filter rather orange instead of red is!)
No China plastic / rubber smell like several other articles. (Absolute neutral)
Excellent fit and elasticity.
Prima to walk with Dark-adapted eyes out. (As long as meet any cyclist with anti-aircraft headlights ;-).
Who wants to read up on the subject, typing in Google:
Wiki dark adaptation eye
Wiki Purkinje effect
