This large contemporary center drain drop-in tub has sophisticated curves and bold decking, and a softly sloped backrest offers unparalleled comfort along with an extra spacious interior. The bubble massage air system delivers warm air bubbles to caress your entire body. The air system takes surrounding air, heats it, and infuses it into the bath, relaxing muscles and leaving you feeling refreshed. Customize the experience by adjusting the intensity from a soothing effervescent touch to a more spirited massage.