In the past two years, barre problems with 100 percent cotton knit fabrics have increased rapidly. There are several mechanical causes of fabric barre associated with the spinning and sliver preparation processes: yarn count variation, twist variation, and hairiness. Fabric barre is also due to variations in selected fiber properties, especially micronaire, maturity/fineness, and fluorescence. Bale management guidelines and computer software programs can help spinning mills control the key fiber properties affecting dyeing and finishing to reduce or eliminate the recurring barre problems. The exact solutions depend primarily on the specifics of end product, spinning system, and raw materials.