Good quality backpack. Led panel is bright and good color quality. Only the app and way of updating the images is not that good... It creates a hotspot you have to connect to. So you loze internet connection on that time (bluetooth would be better). And than every time you want to change what is shown , you have to delete the current program and upload a new one. This takes some time (if you manage to make the connection, not easy... ) So perfect for advertising and fun, not to send specific images to the one behind you (I wanted to use it in traffic as an indicator)
MEME BAG - Display your favorite memes.