What's the doggie doing to the fire hydrant?
As resin ages certain vapors are given off that may be toxic to be around your entire time at home. It would be a long term thing like radon being associated with bricks, earth and concrete. Also the UV light in sunlight can degrade it and make it brittle and discolored over time. I wouldn't use it.
What the salesperson reported is authentic. I do opt to put on sunlight colorations decrease than my visor and the combination of the amber and the coloration interior the glasses receives fairly funky in the direction of the day. I do have a pair of amber glasses that I put on at nighttime and prefer them.
