Cone sleeves are made from 3M Flexible Prismatic Cone Sheeting. Series 3340 is specifically designed for reflectorizing polyvinyl chloride (PVC) traffic cones. Featuring plasticizer-resistant, prismatic lens retroreflectors, these cone sleeves appear bright even in conditions where reduced visibility is a concern. Thin, flexible and durable, these cone sleeves are coated with a transparent, pressure-sensitive adhesive for easy application.