Fold Over Elastic is an easy edge finish for diaper covers, necklines, waistbands, and blankets. Fold Over Elastic makes cute headbands too! Fold Over Elastic, or FOE, is elastic that has a fold line down the center. Simply fold it over the raw edge that you want to finish and sew it on. Stretch as you sew to gather the edge, or sew as is to cover the edge. Wholesale FOE here.