The graceful hourglass design of this tub with a center drain provides plenty of room to soak or to enjoy hydro-massage. The design of this bath offers two backrest relaxation positions and the softened interior curves are widely appealing and attractive. The bath can be dropped-in or under-mounted 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.