Unisex Designer Sport Sunglasses from the SeaDog! Frame is Plastic Titanium. Lens material is TAC. Polarized. Full UV400 protection against harmful UV rays.
What Are TAC Lenses?
TAC, or Triacetate Cellulose for short, are put together using 7 layers to make up the final lens. The first layer of the lens is a Polarizing layer that absorbs glare. Glare can be caused by light reflecting off other vehicles or snow. The second and the third layers are made of a material that resists use in harsh environments. The fourth and fifth layers of these lenses are made up of a material that absorb 99% of harmful ultraviolet rays. The last two layers are made of a shock proof type material that resists impacts and resistance to scratching.
These lenses are lightweight and make the perfect material for use in sunglasses. For those suffering from Photophobia, or what more commonly is known as light sensitivity, TAC lenses are just what you want in your sunglasses!