- Extreme sleeping bag for demanding winter and high alpine touring. - equipment: 1 side zip with 71 cm length + 30 cm zip for arm opening down and fiberdown (synthetic) fill in separate baffle construction foot sack pillow pocket inside the hood body contoured mummy design for optimal thermal regulation anatomic Extreme thermal collar with large inner pocket made from soft mesh fabric length: 220 cm size when packed: 55x25cm,26*33cm, 14l weight: 1730 gr