Two layers of Isofill insulation are offset to cover each other's seams and give optimum warmth retention from spring to autumn. A comfort hood extends this warmth to the head, trapping extra heat for colder nights. If it's icy outside, then keep your essentials in the small internal pocket and leave the anti-snag zip cosily closed until morning.Isofill insulation - synthetic hollowfibre for optimum warmth retentionTwo-layer offset insulation - layers of insulations are offset to cover each other's seamsComfort hood - extends warmth over the headInternal pocket for small essentialsAnti-snag zip guard and full-length baffleCompression sack includedTemp range: 5° (comfort) -16° (extreme)Seasons: 3Size: 225cm x 85cmWeight: 1.6kg