This clean, sleek, modern drop-in bathtub design features a center drain configuration and an extra spacious interior. Lean back on either gently sloped lumbar support backrests and enjoy your bathing experience. 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.