Cool styling and lightweight design encourage compliance even with those who wear prescription eyewear. Whirlwind ventilation system improves end user comfort by forcing air to swirl through the lens area Cyclone Impact Only Optional Double-Take inserts quickly slide into place converting Cyclone from an impact to a splash goggle. Strong, polycarbonate lens, nestled in a sturdy vinyl frame, make Cyclone exceptionally tough eye protection Adjustable headband ensures a comfortable yet secure fit.