The Pure Love Organic Activity Block Set includes 4 blocks that each measure 3.25 inches x 3.25 inches x 3.25 inches. They also feature different numbers, animals, letters, and designs on each block for a great learning experience. The outer part of the blocks are made of 65% cotton, 30% silk, and 5% polyester. The trims are 100% silk and the filling is 100% polyester, exclusive of decoration. Care instructions: wipe clean with a damp cloth.