Store your soap; sponges and brushes in a flexible configuration.
Divider allows for 1/2 split or 1/3-2/3 split. More if you print a second divider.
Lower drain cup will catch moistness and hold it to allow the items in the caddy to dry out.
Spout on lower drain cup allows for easy emptying by simply pouring the excess liquid into the sink periodically. You don't even need to remove the cup.
Lower cup can be removed for applications like an outdoor sink where drainage directly below (into the sink cavity typically) is preferred.
One divider slot will allow storage of a typical 709ml (24oz) bottle of detergent so if stored in an outdoor sink it will prevent a near empty bottle from blowing around in the weather.