An immobilization device is provided herein that is pre-fabricated, yet highly customizable to the patient's body habitus and injury specifications without requiring an expert or a lengthy amount of time to create and custom fit the device. The pre-fabricated immobilization device described herein may comprise a polymer material that is moldable, re-moldable and reusable. Examples of such polymer materials include, but are not limited to, a thermoplastic material, a vitrimer material, or vitrimer-like material, each having a transition temperature ranging between about 100° F. and about 180° F., and in some embodiments, between about 110° F. and about 140° F. A method for fitting an immobilization device onto a patient is also provided herein.
