Liner is a full frame model that provides good protection.This model has a single lens with 100% UV protection.The frame is ventilated to minimize fog and condensation.Liner is comfortable ski goggles with good protection suitable for alpine skiing or freeriding.Lens Features.Liner´s lens is made of unbreakable polycarbonate and has 100% UV protection.Material.Two layers of foam make Liner comfortable on the face.Adjustability.The liner has an adjustable strap that you stretch over the helmet.