Unisex Round Steampunk Style Sunglasses from the SeaDog. Polycarbonate Lenses. Alloy Metal Frames. Assorted Colors. Full UV400 protection against harmful UV rays.
What is UV400 Protection?
So you keep seeing the rating “UV400” in the specs for the sunglasses you’re shopping for, but what exactly does that mean? Here’s a simple explanation from the SeaDog Jack Blog page.