Details- Thai massage. Thai massage technique help with opening your back and release your tense in your whole back.- 3D design. Ergonomically fit for your back and massage the whole area of your back separately with muti-directional kneading heads.Back elastic cord for fixing the cushion in the chair or car seat.- High-quality material. Breathable PU material and net fabric material. - Low price. Improving the functions but lower the price. Cost-efficient. - Easy operate. One single button to turn on.