The 3M™ Engineer Grade Reflective Sheeting 3200 Series is an enclosed lens retro-reflective sheeting featuring glass bead retroreflectors, designed for the production of non-critical traffic signs and pressure-sensitive stickers. https://cdn.shopify.com/s/files/1/0420/2033/9875/files/PB_3200_3260_5200.pdf?v=1598943190