The flat sheet is hemmed identically on three sides and has one larger hem on the fourth side. The wider hem folds back over your blanket, coverlet, or duvet, and can be finished with a simple stitch, hemstitch, or embroidery.

Unlike other woven fabrics, silk isn’t measured by thread count, but by momme. Momme is a Japanese unit of weight measurement. A higher momme means a thicker/heavier silk, which also can indicate quality level.

Now that we’ve covered some common materials, let’s go over different weave and knit styles. Remember, sheets made with different weave or knit styles can feel and perform drastically differently — even if they are made from the same material.