Sticks to almost any flat office surface and is designed for you to write on with dry-erase markers Static charge keeps each dry-erase sheet in place for up to 12 months despite gravity Writing with dry-erase marker allows quick changes with no mess; permanent marker can also be used to match your presentation need Perforated roll enables you to easily tear off in 31-1/2" increments creating 24" x 31-1/2" sheets Made for presentations on-the-go: tear off, cling, write and toss away after a few days