This planter allows the roots to air prune. Some plants like that.

It is a 5 part print. You need 2 halves, 2 rings and 1 bottom for a planter. Assembly is done by placing te bottom between the halves and adding the rings to the top and bottom. Use a drop of ca glue to attach them. 

In case you need to re-pot the plant you can take of the rings and split the halves for ease de-potting.