Grab your kids' attention with these colorful number mats. Interlocking pieces are 12" x 12" and when connected with cover an area of 10 square feet. Pieces also interlock in 3-D format. They are made of a 1/3 inch, foam-like materials. Children can also use their imagination to create houses, toy boxes and castles while learning their Arabic numbers (Originally Indian). A must for pre-school and kindergarten classrooms. Comes in attractive plastic tote bag for easy storage. Non-toxic, safe and washable.