hot cold therapy pad/pain management pads compatible with artic ice, polar, donjoy, ossur, and aqua relief device (universal pad) um those pads are used to connect with a cold therapy machine to deliver hot or cold water to the various parts of the body.the pad can be secured with an elastic, hook and loop tab belt. system uses a motorized pump to circulate cold water from a cooler to the pad. using those pad with the therapy device, it will help with muscle pain, as well as some joint and muscle disorders, such as arthritis. it may also promote faster healing of athletic injuries.