The Hey! Play! Giant Interlocking Foam Square Tic-Tac-Toe Game brings to life a classic loved by adults and children alike. Including 9 non-toxic, EVA foam squares that provide stable construction, yet a soft surface on which to play, easily build a tic-tac-toe game, hopscotch game, or create a small surface for other activities. All pieces can be easily connected, and easily cleaned with soap and water.