We bought two of these Gelert sleeping bags for a caravan holiday in Devon . Not being sure of the weather to come we also had a blanket for each bag . Sure enough it was a wet week and windy . The bags were fine , roomy , light and easy to zip and unzip . They are definitely a summer only bag and we had to use the blanket too . If it had been a dry week with 15c nights then the bags alone would have been sufficient . I would reccommend these bags to anyone wanting well made , very roomy ,summer bags that roll into a small stuff bag and are light in weight . Great for backpackers bunking down in someones house without a blanket , or , carry a thin blanket to put over the top and keep the warmth in without the weight of a winter bag .