NOTE:1.To extend its service life, youd better put it in a dry place after using it. 2.Do not use it too frequently. Slowly increasing the use can give you a better feeling.HIGH QUALITY - The handheld massager is made of durable ABS. steel rolling balls can be flexibly rotated in 360 degrees that can massage every corner of your body.IDEAL SIZE EASY TO CARRY - The massage roller ball has a mini size of 3.45" x 2.9" x 3.74" (fits most hand sizes). Ball diameter: 1.5cm/0.6oz. Its so lightweight and small, that can be easily put into bags. You can bring it to home, office and anywhere you want. Can be used anywhere and anytime.STRESS AND PAIN RELIEF - The roller ball is suitable for relieving and reducing sore. This self massager will release you from muscle pain and mental pressure after a long times work or study, speed up recovery of aching muscles in deep sleep, too.WIDELY USED - The massage massage ball roller handheld is suitable for any point of your body, it can work well as a massager for neck, back, foot, legs, muscle, arms, hands and so on. Its Best for full body care and blood circulation,greatly benefits your health.