Bioflow Sport Wristband Central Reverse Polarity - Our Unique Technology. The magnets developed by Bioflow use a strong, multi-directional force of magnetism called 'Central Reverse Polarity' also referred to as 'CRP', to mimic the expensive professional equipment used by physiotherapists. Molecules that exit a CRP field are more efficient than those produced by standard magnets. This technology is patented to Bioflow and no similar method exists. Magnotherapy has been used for centuries by humans and animals to aid healing, alleviate pain, improve circulation and help with many other conditions including arthritis, sports injuries, poor circulation, high blood pressure, skin complaints, fatigue syndrome and general aches and pains. Bioflow bracelets and wristbands contain only the highest quality neodymium magnets - the strongest type of permanent magnet known. Bioflow products are credited as a Class 1 medical device in the United Kingdom. Please note: Bioflow products should not be worn by anyone fitted with a heart pacemaker or other implant that could be affected by a strong magnetic field.