Sixteen soft building blocks with lots of peek-a-boo windows! Eight colored blocks plus eight black and white blocks. Some blocks rattle and others create a crinkle sound as they are squeezed. Surface washable. Age: from newborn to 36 months. Play is an integral and necessary part of a child’s development and education. This philosophy is at the core of our product development and drives us to continue developing and sourcing new and innovative products.