Newlife’s Chalkboard-Mag is made of flexible permanent magnet and chalk PP or PVC film. It is able to attract on iron board, mag-paint and other ferrous surface, and free to remove and reposition, without bubbles and residue. Chalkboard-Mag has wide format up to 1.2M, unlimited length, compatible for different kinds of chalks, great quality of writing and erasing, good weather resistance, safe to use. It has more than 30 classic colors.