The Portabrace POL-DSLR2 is thickly padded with insulation and lined with Mylar fabric to reflect heat back into the camera. Air activated heat packs will help keep the battery, recorder, lens and even your hands warm. Improved access to the lens (even when reaching OVER the camera); easier fit on tripods, fewer zippers, grip material around lens, suede leather handles make it comfortable to carry. Improved, insulated lens hood protects the lens in transport and prevents condensation...