A positioning device is described. This device includes a planar sheet having first and second side edges and a top surface. A patient is positioned on the top surface where the first and second side edges are adjacent to the patient's legs. A first flexible substrate and a second flexible substrate are coupled to the respective first and second side edge of the sheet and are capable of wrapping around an adjacent leg of the patient creating a wrapped engagement. This wrapped engagement of the patient's legs prevents heat loss during pre-surgery, surgery, post-surgery or transport of the patient. Handles coupled to the sheet may be utilized for lifting or moving the sheet when the patient is supported by the sheet.