A disposable Cast and Intravenous (IV) Medical Shower System for protecting casted and/or IV therapy injected appendages from moisture while a patient is showering or bathing. A plurality of embodiments are disclosed, including a variety of sizes and colors for a variety of users for a variety of applications to accommodate a variety of limbs and afflictions such as wounds with or without a bandages, IV or drain lines, and fixed casts. One embodiment of the system is characterized by flexible stretch vinyl in a tubular shape with only one opening, which creates a water tight seal between the appendage and the system. Additionally, the midsection torso embodiment has an optional pocket on the inside surface (facing the skin) that is used for housing a medical device such as an insulin pump or pocket health monitor. Finally, the process for making and using the system is described in full detail.