BERNAT-Soft Boucle Yarn. This yarn is quicker to use and will give you a thicker project. Great for use on hat and scarves. Weight category: 6. Content: 100% acrylic. Putup: 5.75oz/163g, 144yd/131m on size US 11/8mm knitting needles. Suggested crochet hook size is L11/8mm. Dyelotted: we try but are not always able to match dyelots. Care: machine wash and dry, do not bleach, do not iron, do not dry clean. Imported.