What does UV400 mean?

It means the lenses block wavelengths up to 400 nanometers, covering the full UVA and UVB range. That is the standard full-protection rating for sunglasses.

Are these good for fishing or boating?

Yes. Polarized lenses cut the glare that bounces off water, so you see below the surface better. They also help on snow and wet roads.

Can I put my logo on them?

They are sold as a customizable product, so they are intended for printing or decoration with a logo or design. Confirm the decoration method and artwork requirements with the seller before ordering.

What are the frames and lenses made of?

The frames are polypropylene plastic and the lenses are polycarbonate plastic. Both are lightweight and resist impact better than glass.

They are adult-sized, about 5.5 inches wide, 2 inches high and 1.5 inches deep. There is no separate small or large fit.

Do polarized lenses work for driving?

They reduce glare from the road, dashboard and other cars, which most drivers find helpful. Some car displays and tinted windows can look odd through polarized lenses.