FLOW Interchangeable Cutting Surfaces Simpleware $12.49 Slate (black) - $12.49 Emerald (green) - $12.49 Tangerine (orange) - $12.49 Ochre (red) - $12.49 Aqua (blue) - $12.49 Quantity This variant is currently sold out FLOW™ by Simpleware® is designed with interchangeable boards which can be easily snapped into the base. Purchasing multiple boards makes cross contamination a thing of the past and provides a new look for FLOW with five color variations available.