Large Drawing Mat can be used for painting with 4, 5 babies. The whole size of the Doodle Mat is 40x30 inch, and the valid drawing area is 32x30inch. Large Doodle Mat is convenient for parents to company and multi-mates play! Fully developing children's creative thinking and painting interests! , , Steps: 1. Fill the water doodle pen with pure water; , 2. Draw on the mat and watch your lines and patterns appear in multicolored; , 3. As the water dries, the drawings will fade away, and you can draw new pictures once again. , , Note: 1. Please immerse the pen into the water for 1 hour before the first use , 2. Please use pure water without dust otherwise it may leave stains