Our magnetic therapy is designed to work with the electrically charged particles within the blood. A reaction to the magnets widens blood vessels, increasing blood flow and aiding in oxygenation and nutrient supply. This effect helps to reduce inflammation and ease soreness. These bell boots can be helpful for treating navicular, laminitis, and more. The 4 unipolar magnets (1100 GAUSS) in each boot offer low to medium penetration. Sold as a pair.Always consult a veterinarian for professional advice regarding your horse's health; this product is making no medical claims. Magnetic therapy is not for use during exercise. Start with 15-20 minutes and gradually increase time. Use for short intervals only and no longer than 8 hours.