PREMIER YARNS-Deborah Norville Serenity Chunky Heathers. If you love soft heathery yarns Serenity Chunky Weight Heathers is the yarn for you. Six color blends are perfect for mixing and matching and since this is the same weight as all Serenity Chunky yarns you ll be able to mix and match with them too. Weight category: 5 100% Fine Acrylic 3.5oz/100g 109yd/100m. Suggested knitting needles sizes US 9/5.5mm-US 11/8mm. Suggested Crochet hooks sizes US K/10.5mm-US M/13mm. Dyelotted: we try but are not always able to match dye lots. Easy care: machine wash tumble dry do not bleach do not iron do not dry clean. Imported.