Quote Originally Posted by scratchin dog View Post
These smoke colored poly sheets may have the anti-UV layer added as a special coating for better weather resistance. I'm not sure about that. That would be a good question for the manufacturer. But it would be another plus if it did block the harmful UV rays and just let visible light pass through.
Isnt UV needed for vitamine D or am i saying something stupid. Its nice for dogs to enjoy the warmth of the sun sure.