Post-it Flex Write Surface allows you the flexibility to instantly transform your work surface into a whiteboard and the freedom to write with even a permanent marker without stains. Backed by a 3 year limited warranty.* While only water is needed to wipe away permanent marker, Post-it Flex Write Surface is also safe for use with common disinfectant sprays. It's been tested with common disinfectant sprays found in medical facilities however, as always be sure to follow the manufacturer’s instructions.It’s an amazing feeling when your team just clicks—everyone feels a shared drive toward success. Capture that feeling at your next session with Post-it Flex Write Surface.  The dry erase whiteboard you can use with dry erase AND permanent markers to help track due dates, to do’s and metrics for your team projects. Transform your space by resurfacing a blackboard, stained whiteboard or cover an entire wall. With the use of permanent markers, there is less chance of accidental smearing or erasing, and the permanent marker wipes away with just water. While only water is needed to wipe away permanent marker, Post-it Flex Write Surface is also safe for use with common disinfectant sprays. It's been tested with common disinfectant sprays found in medical facilities however, as always be sure to follow the manufacturer’s instructions. Designed for one-time wall application for long-term use. Limit attempts to reposition the film as repositioning the film could result in permanent damage to the writing surface including permanent creases or imperfections to the writing surface and is not recommended usage. Whenever you want to brainstorm, present or track projects, Post-it Brand is ready to help you succeed.