Our Mt Vallon Goggles, named after the famous Mont Vallon in The Three Valleys, come with our fully polarised Category 3 Red, Orange and Blue lenses for those bluebird days, also our category 1 pink lens for those low visibility days. All of these can be changed in seconds in your room to suit your style that day or on the mountain if the weather changes. All of our polarized lenses are made from triacetate cellulose – or TAC for short. There are 7 layers that makeup TAC lenses. The first is a polarizing layer that provides 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.