Square Magic Drawing Mat: The whole size of the coolplay doodle mat is 40x40 inch, and the valid drawing area is 100*100cm, which is large enough for kids to draw together. No Mess No Fuss The using is just fill the accompanying pen with clear water and put the pen point into the water to soak enough, then you can draw or scribble over the doodle mat. Reusable Painting Item: Your little one can draw on doodle board mat again and again. The front of mat is covered with the soft warp knitted rain-coat fabric, the back is made of water-resistant nylon material. Drawing will magically disappear after 3-10 minutes (depending on the temperature and air flow) Gift Box and More Accessories: The package comes with three magic pens, pen brush, four templates, eight patterning sponges and stick figure drawing booklet. Customer Services: Contact Seller and we will refund you or ship you a replacement if the one you received fail.