A gown (100) having a body-covering portion (101) and an outer layer (111) coupled to the body-covering portion, thereby defining a pocket (112), is provided. The outer layer can include a film layer (116) having a thermally reflective side (101) disposed facing the body-covering portion. In a patient warming system (600), a warming device (601) can be provided. The warming device can be placed in the pocket to warm a patient.