The technology described herein generally relates to a garment (500) that is insulating yet light weight, which may provide protection from the elements without weighing down the wearer. The garment (500) in accordance with the technology described herein comprises a layer of thermally insulating sheet material having one or more voided portions in place of conventional down or other synthetic thermally insulating materials. The one or more voided portions allow the thermal insulation to be light weight and adequately protective in cooler/cold weather, without adding motion hindering bulk to the garment (500).