The chalkboard is designed to make math learning more fun for parents and teachers. suitable for children ages 4-8. 100 x 100 cm. (transparent) adhesive, glass, attached to the board. sticks like a magnet. no surface damage. moisture cloth or wet wipes are not used. white wooden sticks are used. dry wipes should be used. remove dust from the surface before use. it is not suitable for children under 12. it has a non-stick, non-stick coating. small filter. gift can order up to 10 pieces of this product. swordslife reserves the right to cancel orders over 10 pieces. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.