About the Calf Sleeve: The Platinum TM calf sleeve is the best choice for higher levels of discomfort, heavier calves and helping to relieve/prevent running calf cramps. It provides effective relief for discomfort due to muscle spasms, strains, shin splints and 'running calf cramps'. We recommend wearing it while exercising or jogging to help prevent injury and running calf cramps. By optimizing energy channels and improving circulation magnetic thermal regulation helps condition the muscles and improve nutrient absorption and toxin removal. a powerful magnetic therapy field using 12,800 gauss neodymium magnets, inserted at precise locations, penetrates completely through the calf or shin by facing the magnets to the back or front of your leg. The calf/shin support contains a total of twelve (12), research grade magnets. Platinum gray color with soft inner lining. Platinum Innovations & Therapeutic Advancements: Therion's exclusive Maximum Field Integration technology - The most effective method known in biomagnetics to optimize magnetic field strength, maximize penetration depth, and provide complete saturation of the affected area. Patented Thermal Regulation System - Whether you're an athlete, a weekend warrior, or simply relaxing at home - This amazing "Smart Support" system provides unmatched comfort and support at any level of activity. By precisely controlling the movement of heat and perspiration, it dramatically increases wearability and user tolerance from only an hour or so, as with standard neoprene supports, to 24-hrs/day for an indefinite period for Therion supports. This is one of the reasons the calf/shin sleeves are excellent for running calf cramps. Large, " diameter x " thick, 12,800 gauss neodymium magnets - for maximum effectiveness and faster acting relief. Plush Inner Lining - is amazingly comfortable on the skin.