Grab your kids attention with thesecolorful alphabet mats. Interlocking pieces are4" x 4" , all mats together cover 7 square feet.Pieces also interlock in 3-D format. They are madeof a 1/3 inch of foam-like materials. Children spellwords or use their imagination to create houses, toyboxes, castles,etc. A must for pre-school andkindergarten classrooms. Comes in attractiveplastic tote bag for easy storage.