Lightweight sleeping bag, with minimal volume after packing designed for summer stays in nature, siliconized hollow fiber filling Izotherm Classic, single-layer construction, anatomical cut, half-open shaped hood, one-hand adjustable hood pull-down, inner collar with regulation, two-way zipper covered with flap, reinforced flap against zipper jamming, lock against spontaneous opening of the zipper, loops for hanging, inner pocket, hooded pillow pocket, rolling compression cover