foam building blocks/foam mat/eva play mat. Imaginative /creative training, head-hand coordination, color identification foam building blocks/eva floor mat/foam floor mat1.Color combination: Red, Yellow, Green, Blue2.Packing: 40pcs/set, with a PVC bag3.Size22cm x 29cm per bag Thickness:2.5cm4.MaterialEVA ( Ethylene Vinyl Acetate )5.shrinkable wrap packing. foam building blocks