Mckinley Snow Goggle Is Designed For The Young Skiers Willing To Follow Their Skiing Idols. Easy Waering But Fancy Sportive Design Give The Right Protection To Our Youngs With Sportive Style. Helmet Compatible, The Mammoth Is Unisex In Huge Variety Of Colors. Photocromic Model Available For Those Dark Snowy Days.Frame:- Mold Injected Thermo-Plastic Urethane Frame. Helmet Friendly - Flexible To Fit A Wide Variety Of Helmets.- Three-Layer High Density Foam Protecting Your Face From Any Faceshots.Lens:- Different Color Dual Spherical Lens. All According Ce En 1836 And Usa Ansi Z80.3.- Outerpc Len Is Antiscratch Hard Coating. Inner Ca Lens Is Permanent Anti-Fog.- 100% Uv Protection And Anti-Reflective. - Photocromic Model Available.Strap:- Extra Wide Adjustable Elastic Strap.