The Portabrace POL-HM850 Polar Cover is designed to keep the JVC GY-HM850 or 890 camera warm when shooting in cold temperatures. It has a black nylon fabric exterior and is thickly padded and constructed of high loft insulation.
The interior is lined with Mylar fabric to reflect heat back into the camera chamber. Air activated warmers placed inside the case to maintain interior temperatures to keep battery, recorder, lens and hands warm. The case has been tested at minus 50 degrees Fahrenheit. Two hand openings at the lens are enclosed with fleece cuffs for warm access.
The attached insulated lens cover protects the lens in transport. It also prevents condensation from forming when bringing the Polar Cover in from the cold.