-- Electrical Muscle Stimulation (EMS) involves delivering small, low-voltage electrical impulses to a muscle via electrodes placed on the skin, in order to cause the muscle to contract. EMS creates steady electric impulses that stimulate muscle contractions--many of them over a sustained therapy session. This repetitive contracting and relaxing of the muscle have the effect of Increasing circulation (blood flow) to the affected tissue area, which aids in repair. EMS goes beyond the skin to deliver unique waves for a more comfortable sensation than traditional devices. --Intelligent Posture Trainer Device is designed to promote the natural posture of the human body through muscle stimulation. The device is made of high-quality fabric that fits the human body curve and is skin-friendly and comfortable, allowing you to train your posture while remaining comfortable. Simple button design and integrated design make it easy to use in any position, while 360 surround posture correction ensures that every part of your body is adequately stimulated. --With the integrated intelligent posture trainer device, EMS Intelligent PostureTrainer Device will vibrate to remind you when you are in a bad posture. If you wear our posture corrector for a period of time, you will develop the habit of straightening your back and gaining muscle memory. --Adjustable Shoulder Strap This is an amazing and comfortable postural trainer. The strap is adjustable and with super elasticity, which makes it suitable for various body types, including small, medium, and large sizes. It is easy to put on and take off. Unique features of EMS Intelligent Posture Trainer Device - Form the correct seating posture and prevent short-sightedness. - Force the shoulder to be extended fully. - Eliminates back, and shoulder pain and muscle stress - Encourage posture-strengthening muscles growth independently - Help re-train your musculature - Help prevent forward bending, slouching, and rounded shoulders - Effortlessly maintain an upright position - Reminds you when you are not in a good posture - Develop the habit of straightening your back and gain muscle memory