This rounded yarn is a made up with 3 unique qualities : Organic cotton certifi ed GOTS. The yarn is guaranteed to be ethically harvested and responsibly manufactured from a social & environmental point of view and labelled, to provide a reliable guarantee to the consumer. The trilobal polyester produces a brilliant shine reflecting light like a prism. The very fine metallic polyester has an iridescent shine. Quantity for a sweater: Child 8 yrs: 5 balls Woman M: 8 balls Man L: 10 balls Machine wash. Dry flat.