Ideal for brainstorming, presenting, or tracking projects, this Post-it Flex Write Surface instantly transforms your work surface into a whiteboard. Simply unroll, peel and stick it to a smooth surface like painted drywall, finished wood, glass, painted steel, whiteboards and chalkboards. You can use dry erase markers and even permanent markers without leaving stains on the board. The permanent ink wipes away with just water, so there is no need for chemicals. This whiteboard surface comes with a microfibre cleaning cloth and water bottle.