Serenity 250 MummyOur Serenity 250 sleeping bag will keep you warm and snug on cold nights. The tough shell is filled with a synthetic insulation that holds its warmth and the mummy shape provides maximum insulation and comfort. The Serenity has a soft plush lining and large shoulder baffle to make your night in the wilds as comfortable as possible. Theres nothing more important than a good nights sleep, and our Serenity 250 will keep you warm and snug on cold nights.