18 Shape brace stretch, open shoulder straight back, adjustable shoulder strap, stable stretching force. 2Helps correct poor postural habits and ease neck, back and shoulder pain,easy and convenient to use. 3Allows you to actively adjust the correct posture through vibration prompts without being restricted by traditional correction bands. 4There are three magnets on the back, which can stimulate the acupoints to relieve discomfort and correct the back posture. 5Vibrate to remind design, more effective to improve selfawareness of back straightening, especially suitable for sedentary people and students homework time.
