3M™ SecureFit™ Protective Eyewear is designed to diffuse pressure over the ears, so the glasses automatically adjust to the head and facial features of the wearer. Weighing less than 1 ounce, the durable, snug-fitting, flexible nature of SecureFit offers a more comfortable and personal fit than old-fashion “one-size-fits-all” glasses. Anti-fogging properties help maintain visibility.