1. Material: EVA
2. Scientific neck care, lying down natural stretching cervical spine, such as two-handed acupressure cervical muscle
3. Use gravity, natural stretching of the cervical spine, kneading neck points, the arc of the uniform pull apart
4. Massage point pressure, help to relieve cervical spondylosis caused by dizziness, swelling and pain, soreness and so on
5. Ergonomic design, both sides of the stretching, light and heavy have degrees, from weak to strong, care for gradual progress
6. Weight: about 247g
7. Size: about 24.5 x 21 x 13cm