Includes a removable bi-component bladder, a hook-and-loop strap, and a small pump. The unique bladder consists of a gel chamber and an adjustable air chamber. An extra bladder is provided so you can keep one in the freezer, ready for “cold therapy”. After point, set and match simply deflate the bladder you are wearing and replace it with the cold bladder. Secure the strap, then gently inflate the air chamber to apply precise and comfortable compression therapy.