Sorry, I think they are dreadful things! Whatever size or shape the person is they look mildly ridiculous, although most of us look a bit daft in our nightwear I suppose. Also, I cant abide man made fibres, they make me itch and overheat, and the thought of wearing one in bed makes me scratch just thinking about it! I wear cotton pyjamas from M and S, skin can breathe in them, and far more hygienic than man made fibres. I dont have heating on at night, but we spent a lot of money on insulating this house when we did a lot of building work and it never really gets cold. I like a cool bedroom and a warm bed, so find that a hot water bottle during the cooler months works great. I cant imagine how cold that lady in the Saga magazine must keep her house if she jut spent the winter in an onesie, what about her guests? No fire, no heating!