It's "medical" tape. It is supposed to releave the strain on the arm therefor taking away the pain. I can't tell if it's working yet though. Only thing I have to be careful off is my allergy to "glue".
There's only 1 type of medical "glue" the sensitive parts of my body can handle. So if this starts to swell up under the tape I have to remove it else I'll get a huge rash from it.