The Tifosi Mast Fototec Polarized Sunglasses will keep you performing comfortably with non-slip gripping points, ventilated lenses and tint adjusting Fototec lenses. Hydrophilic and adjustable nose pieces and temples will provide a perfect fit and because they're water resistant they'll stay where you want them. Tifosi's Fototec Polarized lenses block horizontal glare and feature variable tint giving you the right amount of protection when you need it. These glasses are built for durability featuring virtually indestructible Girlamid TR-90 nylon frames and polycarbonate lenses. Tifosi is the Italian word referring to a super-fan or an enthusiast, which is who they are and who they make their eyewear for. Their mission is to provide technically advanced eyewear to enthusiasts of all sports and outdoor activities.