Multi-functional Goggles are in a foldable format so should be east to stove into backbpack or pannier. They are anti-fog and windproof and are perfect for Ski, Dirt of OffRoad adventures! Glasses are unisex and available in one size. Multiple options are available. Adjustable head band makes these goggles super secure but also adjustable to any head size. Lenses are not prescription.