Block face shield is made of clear polycarbonate-a durable material used for protective goggles. And it is lightweight and designed to be worn like glasses, reducing the uneasy feeling of wearing a face shield. It's also designed for those with glasses, simlpy remove the nose-rest and wear it on top. And coated with fog and scratch-resistant coating to mitigate fodding. Blank imprint. 6 1/2" L x 5 5/16" W