Features: The hot massage stones' oval shape makes them ideal for the entire body conditioning, specifically for common massage areas, the neck, back, shoulders, arms, and legs. Maintain good blood circulation, relieve pain, and keep body tissues healthy These heated warmer stones for spa massage can be applied with essential oils to blend the advantages of aromatherapy with those of therapeutic massage, creating a deeply relaxing, soothing environment to relieve stress and tension effectively. Specifications: Material: stone Color: pink Size: about 3.54 x 0.98 x 2.56 inches/ 9 x 2.5 x 6.5 cm Package includes: 4 x Flat oval massage stone Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. These are natural Himalayan salt rocks, some slight variations in size, color and texture are inevitable.