The BLOC Mask ski and snow goggles fit medium to large-sized faces. Clever new CLICK3 nose adjustment technology allows for a more tailored fit. The dual adjustment strap and helmet compatibility make these goggles an ideal partner for your winter sports adventure. Fogging is no longer a problem as vents direct airflow over BLOC goggle lenses, stopping moisture from settling. Anti-fog coating stops water droplets clinging onto lenses and blocking vision. Plus, BLOC XT6000 double lenses stop cold mountain air condensing with warm air inside the goggle. The polycarbonate outer lens gives extraordinary impact protection. Clarity and a wide field of vision are also assured. Tri layer moisture wicking insulated fleece ensures your face is snug, warm and comfortable. Superior XT Anti-Fog Double lens. Outer lens constructed from Maximum impact resistant polycarbonate (UV400)Tri layer moisture wicking insulated fleeceHelmet compatible dual adjustment strapMaximum UV protection dual lens for medium to large facesCLICK3 nose adjustment technologyOTG (over the glasses) compatibleBloc goggles exceed European directive 89/686/EEC in accordance with the Norm EN174:2001Silicone non slip headstrap. Colour: Matt Blue/Black frame with Brown Revo Blue mirror lens.