Sako sack is an unusual piece of furniture with many functions: it can successfully replace an armchair or a chair, though it does not resemble either, and it has no sharp egdes or rigid surfaces so it won't hurt children. In fact, the sack's soft, streamlined shapes provide a great place for playing with a child! - You can do anything with it! Sako sacks are made of materials and insertions which do not misshape and are resistant to pressure.