<p>Fitted Sheets (Std.
</p><p><span style="color: rgb(128, 0, 0);"><strong>What’s the Difference?</strong></span></p><p>The main thing that separates a fitted sheet from a flat sheet are the elastic corners at all four ends. King,14" Deep ) A flat sheet on the other hand doesn’t have elastic, but instead is a flat rectangular shape designed to fold easily and lay totally flat on the surface.