RK Adhesive Vinyl Retro-Reflective Hard Hat/Helmet Sticker, 1" Length x 4" Width x 0.014" Thickness (Pack of 16) (Fluorescent Lime Green Yellow) Qty: One sheet of 16 1"x4" Helmet Strips Self Adhesive Retro-Reflective Hard Hat Stickers for increased Conspicuity Weather resistant Compliance with NFPA 1971, 2007 edition