This is black reflective tape. I originally purchased this for my motorcycle. I added some stripes of it to my pannier bags and along the bottom edge of my helmet. A couple of strips live along the front fender as well. This tape is black, durable, and stealthy. However, it lights up brilliantly at night. I’ve found this to be really useful addition to my toolbox. I’ve added it to the edges of my mailbox, and I’ve added strips to my sea kayak paddles. My commuter bike for tooling around town has it around my seat-post and on the black handlebars. It’s almost completely unnoticeable during the day and is quite bright at night. If you order a roll of it, you’ll be surprised at how useful it will be.
Available for purchase at Amazon