Uvex by Honeywell Astrospec 3001 Black Safety Glasses with Shade 3.0 Anti Scratch Full Face Mask 0 oz yd² polypropylene substrate Provides 0 oz yd² polypropylene substrate Provides barrier to a broad range of chemicals Strong and durable for rigorous activities and rugged situations involving moderate liquid splash Benefits: They offer greater physical strength and chemical holdout when compared to traditional film products 2 upper chest pockets Uvex Astrospec OTG 3001 is the same lightweight: panoramic lens protective eyewear as the Uvex Astrospec 3000® but with an attractive OTG (over the glasses) styling It features an economical lens replacement system