Bolle Scarlett Modulator Goggles Embedded P80+ anti-fog layer on inner lens restricts moisture build up. Flow-Tech venting promotes directional airflow across the inside of lens. Double-layer face foam for a comfortable fit. Siliconized strap provides total support for the goggle on the helmet. Double lens creates a dual-pane thermal barrier between the cold dry outside air and the moisture generated inside the goggle from intense activity, to prevent condensation.