Features:1. It can moisturize the skin and ease the mental stress, through the massage and hot compress, it can strengthen the bleed circulation in the body, and accelerate the body metabolism.2. With essential oil, it can relax nerves, relieve stress and improve sleep quality.3. It can moisturize the skin, restrain the pores and tighten the skin.4. It is a complete foot massage set, can be used to massage the arch of the foot, toes and legs.5. Suitable for professional use or household use.Specification:Item Type: Massage StoneMaterial: StoneQuantity: 20Pcs/SetColor: BlackWeight: Approx.1700gTypeQuantitySize(cm / inch)Suitable forLarge Oval47.5 * 5.5 * 2.75 / 2.95 * 2.1 * 1.1shank, feetMiddle Oval46.5 *4.5 *1.6 / 2.5 *1.7 * 0.6instep, ankleSmall Oval43 *4 *1.75 / 1.2 * 1.5 * 0.7heel, sole Small Oval83 *4 * 0.8/1.2 * 1.5 * 0.3between toesPackage List:1 x Set of 20Pcs Massage Stones