There are 4 built-in massaging rollers, and it generates effervescent bubbles. The foot-caring massager even includes 2 foot care attachments on the cover to pamper your feet, to smooth, to have reflexology at the soles of your feet. More in addition, built-in red light for fun, and a small container for you to store your favorite foot treatment reagent, such as lavender, or eucalyptus oil, or other medicinal leaves or oil of your preference. The medicinal oil or scent is to be released gradually during spa session for a soothing treatment .There are 4 built-in massaging rollers, and it generates effervescent bubbles. The foot-caring massager even includes 2 foot care attachments on the cover to pamper your feet, to smooth, to have reflexology at the soles of your feet. More in addition, built-in red light for fun, and a small container for you to store your favorite foot treatment reagent, such as lavender, or eucalyptus oil, or other medicinal leaves or oil of your preference. The medicinal oil or scent is to be released gradually during spa session for a soothing treatment . Measurements: 4.33 Depth/Inches, 13 Height/Inches Base Material: 80% Polypropylene, 20% Polyethylene Care: Wipe Clean Country of Origin: Imported