Collegiate individual gullets allow you to alter the width of your saddle for a custom fit. All Collegiate saddles come with the Simple & Quick changeable gullet system. As the horses level of fitness & shape changes, the Collegiate changeable gullet allows you easily change the width of the saddle and provide a custom fit for your horse. Collegiate gullets are black with a color-coded sticker that indicates the width. The Gullet Series III can be used in all Collegiate Saddles.