adjusting the goggles to the current lighting conditions thanks to the optional replaceable glass. S2 category lenses - medium intense sunlight lens dimensions: 210 mm x 98 mmColors and categories of lenses: Cat. S2 - 18%-43% - medium intense sunlightLens dimensions: Lens dimensions at the most distant points: A: 210 mm B: 98 mm The Quick & Easy Magnetic instant lens replacement system - these are one of the best and fastest solutions of this type available on the market. Magnetic lenses allow you to quickly replace lenses and adjust the goggles to the current lighting conditions. Features of the Arctica G-105D Goggles: Quick & Easy Magnetic lens replacement system Double lenseswithRevo coating They offer excellent comfort and perfect fit Three-layer anti-allergic sponge Lens made of two materials External glass made of polycarbonate Inner glass made of cellulose acetate covered with an antifog layer to prevent fogging Helmet compatible UV 400 filter Additionally, it is possible to purchase a replaceable yellow brightening lens, category S1 (80-100%) - very weak sunlightThe set also includes: Practical microfiber bag for storing goggles. TECHNOLOGIES APPLIED: TPU FRAME - THERMOPLASTIC POLYURETHANE This is an extremely durable material that remains flexible in a wide temperature range. Goggle frames made of this material are soft, pleasant to use, and at the same time extremely resistant to scratches and cracks. DOUBLE GLASS SYSTEM Double lenses and adequate ventilation are the two basic features that prevent fogging of the goggle lenses. The outer layer is made of hard polycarbonate and the inner layer is made of cellulose acetate covered with an anti-fog layer. The layer of air between the glass creates a thermal barrier and eliminates fogging. LENS WITH UV 400 FILTER - The UV 400 filter blocks all three ranges of ultraviolet radiation: UVA, UVB and UVC. It guarantees 100% protection against the undesirable effects of eye exposure to solar radiation. REVO COATING - A coating consisting of 12-15 protective layers that reflects harmful sun rays and protects the eyes from ultraviolet radiation. A solution used in goggles and sports glasses. ANTI-FOG COATING - A special layer that prevents the lens from fogging up at very negative external temperatures. Improves visibility in difficult weather conditions. GOGGLES WITH THREE-LAYER SPONGE - Three layers of high- and medium-density polyurethane foam are covered with a soft, pleasant to the touch and hypoallergenic polarfleece material. HELMET COMPATIBLE GOGGLES - Fitting the goggles to a ski helmet increases the pleasure and comfort of use.