Large size: chalkboard paper one roll contains 45 x 200 cm. made out of a strong vinyl material, frosted surface can be used for chalk writing.the chalk on the board is best to be wiped off by a moist rag,and write after black/white/green board is dry.
easy to use: material: vinyl decal - reusable; peel off and erase the text and then use again.
don't apply to textured, rough and uneven wall surface, which will weaken the adhesive strength.
use chalks or standard chalk ink pen to write and damp cloth to clean.