All Supernormal sunglasses are polarized and come with a 100% UV protection, in compliance with European, USA, Australian and New Zealand standards. All of our non-prescription sunglasses are made from triacetate cellulose – or TAC for short. There are 7 layers that make up TAC lenses. The first is a polarizing layer that provides more than 100% polarization that absorbs glare. The second and third layer allows durability that resists harsh environments. The fourth and fifth are UV absorbing layers that absorb over 99% ultraviolet rays. The last two layers are shock proof layers that increase impact and scratch resistance.