Rainbow Roll is unspun pencil roving that can be used for spinning, knitting, weaving, needle felting, crochet, or many other things! The yarn can break if tugged aggressively. For best results, unwind a few yards from the roll, knit, unwind a few yards, knit - you get the idea. If the strand does break, overlap the ends and rub between your hands for a quick felted join. The knit fabric is very strong.Recommended gauge is bulky.