It is 100×100 in size. it is applied to the wall, glass, wood. it is held like a magnet. it does not damage the surface. no damp cloth or wet wipes are used. whiteboard pens are used. dry wipe should be done. before applying, you should definitely remove the dust from the surface. there is a hourly plan part on the side. . swordslife reserves the right to cancel orders over 10 units. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.