Fully Adjustable Comfort Strap – Fits All Head Sizes, Specifically Engineered for a Tight, Comfortable Fit! Closed protective eye shield: can protect your eyes from chemical splash, can prevent saliva, fly dust, pollen, etc. Give your eyes better protection. There is enough space inside our goggles, which will not affect you wearing other types of glasses. Anti Fog Ventilated: Soft & Light, Specially Ventilated & Non-Tinted Lenses Guarantees Crystal Clear Vision All The Time! Protect Your Face and Eyes: Perfect for Lab Work, Chemistry, Woodworking, Mechanics, Construction, and More!