Why do these kids’ ski goggles have a dual lens?
These dual lens goggles reduces the formation of fogging. Indeed, the air that is trapped between the two lenses creates a layer of thermal insulation. Thanks to this, the thermal shock between the inside and the outside of the goggles is reduced, delaying condensation from forming on the inside lens of the goggles. To complement this, the inner lens is also given an anti-fog treatment.