Have fun while learning! This hopscotch puzzle mat is made of high quality and high density foam. Ten large 10.5 x 10.5 inch easy-to-handle foam pieces interlock to form this fun classic game. Set includes 10 foam number pieces and 2 foam disks. Each foam piece measures 0.375" thick. This thickness provides a comfortable cushioned surface for hopping. Recommended age 4 years and up