An example technique of forming a package includes retaining a package precursor in a support. The package precursor includes a shrink-formable composition and defines an interior volume configured to enclose a component, such as a medical supply. The package may be formed by at least directing a flow of heated medium from a nozzle toward at least one region of the package precursor to cause the at least one region to shrink faster than an adjacent region of the package precursor. In some examples, an example system for shrink-forming a package includes the support and the nozzle.
