High quality materials: made of high quality PP and stainless steel beads, soft texture, will not harm the scalp, will not fade and not easy to break, manual operation, no power required electric, so there is noelectromagnetic radiation. Design features: unique ball design, free to roll, not easy to loosen, can be used for a long time, relax the scalp, eliminate tension, increase blood flow to the scalp, the design ofthe non-slip handle is easy to hold, easy to use, easy to clean, suitable for all parts of the body Location. Carry it with you: the size of the scalp massager is very portable, you can easily put it in your pocket and backpack, take it anywhere, massage your scalp anytime, n anywhere, without battery or charging,suitable for home or office, travel. Healthy and comfortable: continuous use every day can improve sleep quality and relieve fatigue, let the head massage reduce stress and relax the scalp, not only for the scalp, but also forneck, legs, arms, etc., which can provide deep relaxation and reduce stress. It is very convenient to use in homes, spas and offices. After-sales service: Each product has been quality inspected before being sent to Amazon warehouse. If you have any questions, please contact the seller first and we will actively solve it for you! Thank you for your support and wish youhappy shopping. Made from high quality PP and stainless steel beads, the unique massage ball design relaxes the scalp, eliminates tension and fatigue, promotes blood circulation and relieves joint pain. Continued use every day can improve sleep quality and help you resist fatigue and feel more energetic. It is not only suitable for the head area, but also suitable for the neck, legs, arms,on the back, etc. It can provide deep relaxation and reduces stress and is very convenient to use in homes, spas and offices. specification: Material: plastic, stainless steel beads Color: pink, blue Size: 19*8.5cm Weight: 400g Package includes: scalp massager*4 Tips: 1) Due to different light and screen settings, the item's color may be slightly different from the picture 2) Due to different manual measurement methods, please allow a slight difference in size