Haglöfs is a veteran manufacturer when it comes to making sleeping bags and it shows: the quality is great, and so is sleeping comfort. This model is suitable for serious winter use. Whether your overnighting shelter is a winter tent, snow cave, wooden lean-to, or simply a thick spruce tree, the Musca will keep you warm. Musca series sleeping bags are optimized to fit most women, and are also a good choice for youth. The bag is a bit narrower at the shoulder and has extra insulation at the foot and chest areas, compared to men's models. - Narrower at the shoulders compared to most bags: a good choice for women and other people with narrow shoulders - Extra insulation at the foot box and chest - A thick thermal collar helps prevent warm air from escaping along with your breathing motion and turning sides - A well-fitting hood - Tri-Fusion synthetic insulation - Surface fabric: 50 denier ripstop polyester - Liner fabric: 75 denier polyester - ¾ length two-way zipper on the left side -