Features four manual drops: Cervical, Thoracic, Lumbar and Pelvic. An adjustable-height pelvic and head section allows multiple, simple positioning. The foam cushions have two layers: a firm base to assist with the drop technique and a layer of thin, soft foam for comfort. Casters can be retracted from either side of the table. Under-table clearance 5-1/2". Includes foot switch.