Professional's ChoiceMagnetic Tendon BootsUse Magnetic Therapy for Healing EffectsDurable Nylon w/Soft Cotton LiningElastic StrapsOne Size Fits MostSold in Pairs PCMTB These Professional's Choice magnetic tendon boots can be used on both front and hind legs. These boots are designed to apply the healing effects of magnets to the: shins, tendons, splints, supsensory and check ligaments. The boots are made of durable nylon with a soft cotton lining. Elastic straps allow for a perfect fit on any size horse. For best results, use within two hour increments.