Dye trapping technology keeps colors bright! These color absorbing sheets are made from powerful fibers that soak up excess dyes in water. Once the dyes are absorbed, the sheet locks them away protecting your fabrics from being stained and damaged. Colors are prevented from running or bleeding onto clothes. Saves time by reducing the need for sorting. Saves money by reducing the need for small or LIGHT COLORS ONLY loads. 24 ct Box or 72 ct Box Highly recommended for pre-washing your fabrics or for the first time you wash a quilt!