High-quality materials: The occipital release tool is made of high-quality materials, safe and odorless, with smooth edges that will not scratch your skin. Stable and durable, it can withstand the weight of your body or head, not easy to deform, and deeply relaxes your muscles. No batteries or electricity included, safe and easy to use3 different edges: The massager has round, pointed, and scalloped edges, place the massage tool under your muscles and lie down gently. If you feel pain, you can flip the other side and adjust it to your needs for a precise massageCorrect cervical curve: The cervical orthosis naturally stretches your neck, helps relieve spinal pressure, increases blood flow, and helps adjust the neck curve. Use it for 10 minutes a day, gently stretch, restore normal and healthy spinal curves, and release tight and stiff neck musclesPain relief and massage: Deeply stimulate the body's acupuncture points to help massage the muscles of the neck, shoulders, arms, back, waist, legs, and feet. Helps relieve symptoms associated with occipital neuralgia and neck headaches. You can use body pressure or handheld push to relax tense muscles, relieve headaches, migraines and foot fatigue, and relieve many other daily pains such as muscle spasms, neck and back painPortable and washable: Small size, easy to carry and store, can be put into sports bags, office bags, travel bags, massage anytime, anywhere to relieve fatigue. After massage, there will always be sweat and dirt on the surface. It can be washed directly after use to avoid sticking. After drying with a towel, you can continue to use it