Plastic, hollow, double-walled basin has a recessed neck rest and internal collection system for used water. The basin has a drain plug that is opened after shampooing and allows the water to drain into the hollow section between the walls. After the drain plug is tightened, the entire unit can be picked up and carried away to be emptied. Internal reservoir stores used water. 23-3/4" x 23-3/4" x 6-3/8". Two gallon capacity. Weighs 6 lbs. when empty.