Wonder Blocks™ are made of solid, non toxic safe EVA foam. They are strong enough for children everyday play. Our toy blocks are also soft and lightweight, so building sessions are always quiet and safe.  Wonder Blocks™ are not only for land but as a water toy too! Pieces float in the water for bath time fun!   This Wonder Blocks™ set includes 40 pieces, largest piece is approximately 6"x3"x11" , comes with its own storage bag for easy transportingin. These blocks come in primary colors: red, blue, yellow, and green .  Recommended for children ages 3 and up