Soft, colorful, foam building blocks are perfect for the young creative builder. Ideal for block play on the floor or in the bathtub as the blocks float and stick easily to bathtub tile walls when wet. No splinters, not heavy and no sharp corners. Four Bright colors of exponentially sized shapes. Blocks are 1-3/8" (3.5 cm) thick. Set of 30 blocks. This product ships in approximately 1 days