Some people don’t like to use a flat sheet over fitted sheet because they think it muffles with us at night and we have to make bed daily. “Flat sheet vs fitted sheet” term may be so simple to hear but still here is a conflict between Flat vs fitted sheet. People have started selling flat sheet only and they do not include a flat sheet with their sheet set. But as bedding set seller and experts say about it is, Bedding set is incomplete without a flat sheet. The flat sheet is a sign of luxury.