Cotton silk or metallic cord....they are all more fun when they are overdyedhe name of this fiber is fairly self explanitory. As with any overdyed fiber, make sure that you have enough fiber at the start of your project to complete your piece. I have a few Needle Necessities left and they are pictured below. I cannot get any more of these. Be careful when stitching with any of these fibers...basketweave will create a diagonal striped effect that may or may not be desirable. I tend to use these fibers with decorative stitches more often than not.