EVA LARGE INTERLOCKING FLOORING ACTIVITY PLAY SOFT FOAM MATS TILES CHILDREN KIDS
You can even take these with you - take them apart, put them down to 24" x 24" (600 x 600mm) (easy to fit into the car, or under your arm then), and take them camping, on picnics, etc. (NOT SUITABLE FOR CHILDREN UNDER 3 YEARS).