When picking your yellow, grass or wool sponges, you will have a choice of cuts or forms. Forms are a complete, un-cut sponge.
This means that the sponge will have a flat bottom where it was cut from the ocean floor, but otherwise will be perfectly round. Cuts are when a larger sponge has been cut into pieces. Usually cuts will have two flat sides but a round top.
For everyday use, cuts are fine. If you wish to proudly display your sponge as decoration, we recommend a form.