The BLOC Spirit 3 OTG Google enables you to wear your everyday optical glasses underneath the frame. Although they are unisex, they've been optimised for medium to large faces. The goggle also features a deep tri layer fleece foam with a cut out recess allowing the optical frame to sit comfortably underneath the goggles. BLOC's Vented, anti-fog lenses will keep you on the slopes all day without an issue, while a dual adjust strap will keep the google held to your face.