An heavy duty sleeping bag suitable for all season usage that provides comfort in sub zero tempereatures. Two independent and fully insulated top layers can be used to adapt the sleeping bag to any condition. The padding is manufctured from a special micro pore hollow fiber that provides significantly better insulation compared to the standard hollow fibers in the same thickness of padding. All layers have an increased thickness of padding to achieve extreme insulation. The external baffles protect the bag against cold air from coming through the zips.The outer shell is manufactured from water resistant and breathable "Peach Skin" material. The inner linnig is manufactured from the highest quality microfleece. The huge size of this bag ensures extreme comfort and additionally the bag fits to all Mivardi bedchairs