Lightweight sleeping bag, with minimal volume after packing intended for stays in nature, use in the cold season from autumn to spring, filling with siliconized hollow fiber Izotherm Pro, two-layer construction with stitching, anatomical cut, closed shaped hood, one-hand adjustable hood drawstring, inner insulating collar with regulation, two-way zip covered with a flap, reinforced flap against zip jamming, lock against accidental zip opening, hanging loops, inner pocket, pillow pocket in hood, compression sleeve