Extra insulation keeps you warm in cooler seasons, while the two-way zipper provides ventilation on warmer nights. The single-size sleeping bag even opens into a duvet for versatility, with a built-in pillow adds extra convenience for a restful night's sleep.Isofill insulation - synthetic hollowfibre for optimum warmth retentionTwo-layer offset insulation - layers of insulations are offset to cover each other's seamsTwo-way left hand zipperAnti-snag zip guard and full-length baffleBuilt in pillowCompression sack includedInside pocket for extra storageSeasons: 3Size: 220cm x 85cmPack size: 40 x 22cmWeight: 1.76kg