EXTRA LARGE SIZE AND DINOSAUR FEATURE : 59.06 x 35.43 inch. Provide a large enough area to let your kids to paint on the floor or wall with their friends together.It can also be used as a play mat for children and can be folded to compact size which is portable for indoor outdoor and travel. The back of the mat is water-resistant nylon material, no worry about wetting the floor. NO MESS AND REUSABLE : It is environmental clean and safe for children. No ink, no paint, non-toxic, non-polluting. Never make a mess. Fill the pen with clean water and draw on the mat, the marks will magically disappear after 3-10 minutes (depending on the temperature and air flow) which let your kids to draw on doodle mat again and again.