Soft, safe unit foam blocks that look like REAL WOOD. Assorted shapes. You'll think it's wood until you pick it up. No splinters, firm but not heavy and no sharp wooden corners to worry about. 80 fun pieces of exponentially sized shapes. (i.e. 2 squares =1 rectangle) 1 reusable Zip-Tote bag, 80 block pieces, 1 3/8" (3.5 cm) thick, assorted " unit block" shapes and sizes. Package dimensions: 10" x 11 1/2" , 25 x 29cm. WARNING: Choking hazard. Small parts. Not for children under 3 years.