Classic Equine MagNTX Black Hock WrapsClassic Equine MagNTX Black Hock Wraps Generates Blood Flow Aids in Prevention of Injury for Healthy Hocks Bi Polar Magnets Aids Natural Pain Relief Soft Micro Mesh for Breathability Hook and Loop Closures One Size Fits Most Sold in Pairs The Classic Equine MagNTX hock wrap uses cutting edge, magnetic therapy technology to ease pain in arthritic hocks and relieve other types of hock pain from regular use. The wrap also helps prevent injury when used