Stainless Steel Cooling Roller Massager: Relax your body after a day's work, our idea of a cold massage ball to soothe, relax, it can be used with essential oils for facial massage to smooth fine lines, promote skin care absorption and blood circulation. How to Use: Hand-held cold massage ball, 2-in-1 design for cold and heat; Use as a cold massage ball: you can put it in the freezer for two hours until it has cooled down; Use as a hot massage ball: You can place it in a bowl of hot tap water for 5 to 10 minutes. Function: The cold massage roller is used to reduce inflammation, speed up muscle recovery, and promote blood circulation for plantar fasciitis, tired muscles, back pain, neck pain, hamstring pain, shoulder pain, and stress relief. Full Body Massage: The muscle recovery roller can reach all parts of your body, so it can be used as a back massager, neck massager, foot massager, leg massager, shoulder massager, deep tissue massager, arm massager, etc. Portable and Convenient: