Starr Design Fabrics are dyed on a quality 100% cotton fabric that is PFD (prepared for dyeing). This is a process their fabric goes through at the mill that causes a better bond between the dye molecules and the cotton fibers during the dyeing process. This helps to ensure their color-fastness and helps us to achieve the dark, rich colors that we all love. They use Procion Fiber Reactive Dyes and the majority of their colors are our own special custom creations. These fabrics are the MOST AMAZING hand dyed fabrics!!