Just lie down on the Medi Mats 8820 acupressure points made from resistant, non toxic, ABS plastic. In minutes you will feel the warmth along the parts of your body touching the mat, thats an increase in blood flow and circulation, a natural response to acupressure which encourages a release of natural endorphins and oxy toxins the bodys own pain relieving and happiness hormone. The activation of the body's pressure points not only increases the bloods ability to absorb nutrients and oxygen, but also facilitates the removal of harmful metabolic by products that build up in the circulatory system. For the first few minutes, it is common to feel a prickly warm sensation on the areas being treated, however this will dissipate as blood circulation gets going and any pain or discomfort will be replaced by a pleasant feeling of relaxation. Product Features & Benefits 8820 acupressure points Can be of help when suffering from low levels of energy, high levels of stress, insomnia, tension, migraine, sciatica & depression 100% cotton, removable, washable cover and handy carry strap for easy portability. Made from resistant, non toxic, ABS plastic Size 16.5" x 26.5"