Bubble Massager is waterproof and comes with a built in adjustable vibrating massager, high quality sponge and hanging cord. You can adjust the built-in vibrating speed from low to high, according to your personal preeference. Try the Bubble Massager and apply with your favorite soap and lotion. It will make you feel relaxed, release tension and ease your muscles!! Besides, the quality sponge with the irregular holes aims to maximize an intensive massage and remove dead skin cells