Fil-Tec's hat backings are stable 3-oz/yd tear away stabilizers. Embroidery hat backing is used to improve the crispness of lettering and columns. This is particularly so with low profile and unstructured caps. There are other less obvious production benefits in using hat stabilizer when embroidering caps. Backing keeps up the tension on the bobbin thread and allows the embroiderer to switch from flats to hats often without making tension adjustments. The use of this backing can prevent hat fabric and fiber from being forced down the throat of the machine. An extra fold of backing can also be used to get a firm seating on rotating cap frames to prevent registration slips.