I love wearing my bobbin bottoms under my Mother Male dresses. Especially now, as it's cold outside. I don't sleep in them at all, in fact, but the cotton is definitely soft and comfortable enough for that. My only "negative" issue is, that the bottoms could be a touch longer and the elastic on them maybe a bit more loose. But that's just a very personal sensory issue, not a flaw 🙂👍 Absolutely gorgeous garments all told, with beautiful details. Ordering more at some point is very likely!