Proflip OTG offers great protection and flexibility in the most varying weather conditions. Glasses radically designed with functionality beyond your imagination. The glasses are designed to fit over your regular glasses. Proflip OTG comes with and extra lens in clear. Proflip OTG has been designed to provide the user with the best possible field of view, with unbeatable comfort and functionality that allows the user a long and comfortable workout in the ski track. Proflip has been used extensively by both amateurs and elite in cross-country skiing and biathlon. The visor can be flipped up and down, and the comfortably face foam makes Proflip OTG a favorite among XC-skiers.Technology:CE Standard:- All Bliz Active products are CE-marked which means that we follow the basic health- and safety demands which can be found in the EU- Directives. You can find this manual in the product box.100% UV-Protection:- Bliz Active Eyewear protect your eyes efficiently against harmful UVA and UVB-rays.Unbreakable Polycarbonate Lens:- The lenses are made of Unbreakable Polycarbonate which are 10 times more impact resistant than plastic or glass lenses and offers the highest degree of protection.Fusion Lens Techâ„¢:- Bliz Fusion Lens Techâ„¢ is the standard lens in the Bliz Active product line. It delivers Perfect Curve, Max UV-Protection, Shatter Proof and in some cases Multicoating or Polarized in one lens.High Impact PC:- Strong, lightweight material - perfect when you want to use glasses for a longer period of time.Foldable Visor:- The Foldable Visor can be flipped up and down and allows you to adjust the amount of protection against wind and heavy snow.Adjustable strap:- The adjustable and stretchable strap allows you to secure the glasses on to your head even more.Friction Rubber Nosepad:- Nose pad in soft rubber for extreme comfort and optimal fit around the nose.Silicone Strap:- The silicone strap makes sure that your glasses always stays in place.