This neck massager pressure point is flexible but strong enough to really hit the trigger points and give you and your family a good relief from tight muscles. The massager balls are silicone material but with good feeling and have just the right amount of cushion for its purpose and it flexes enough to easily adjust to relieve sore neck,headache, stressful physical. It could be controlled the pressure as you need, massage yourself after a stressful day at work, like therapist use some kind of oil or lotion to help alleviated your painful muscles.