It comes in 1 piece, and not in pair.
Product has been tested to work for 98% of people. Many of the people that claimed it does not work probably did not read/follow its instructions – Eg. It need to directly contact skin, and one can apply some moistures prior to wearing the product for best results.
There could be a small percentage of people who truly do not feel the heat. This is typically because of their unique body conditions which we are unable to comment. In this case, it is suggested to gift this to someone else who can benefit from it.
Regular use of these products and other treatments should help cure over time. Applying a warm towel on affected area to warm up the blood circulation first before using the belt also helps.
Another common method is to wear the belt and walk around or exercise a bit. Through friction and natural sweat, the moisture and improved blood circulation could activate the energy in the Tourmaline products found in the belt.
This usually happens for people who do not exercise often. Millions of capillaries and arteries inside our muscle expand rapidly due to improved blood circulation. This rapid expansion causes adjacent nerves to send signals back to brain which are interpreted as itch. After a few sessions when blood circulation is improved, the capillaries are wider and allowing more blood passage, then the itch feeling tend to subside.
So advised to try a few more times before discarding this product and dismiss it as unsuitable. You can get more information from this related article - http://www.healthcentral.com/diet-exercise/c/question/54379/45782
No, you should not use our any product that stimulates blood circulation unduly during pregnancy. This include this products, as well as plasters, ointments etc. Ankle, Wrists, Elbows and Knees are probably fine, but should avoid the rest like waist, back and shoulders.
This is the traditional design meant for average Asian bodies and thus comes in only 1 size originally. It could be too small for some if you expect to strap it tightly over your shoulders. But there is no such need. Just by hanging it over your shoulder like a jacket, making sure the Tourmaline area is moist and directly contact the skin, it will be sufficient to get the heating effect. But if you have a larger than average Asian body frame, then it is advisable to just get the Shoulder Belt that can be adjusted to fit the larger shoulder frames.