RED HEART-Boutique Sassy Fabric Yarn. Sassy Fabric is a unique soft, sheer fabric strip with evenly spaces holes to make it easy to knot or crochet. Weight category: 6. Content: 100% polyester. Putup: 30yd/27m. Knitting needle size 9/5.5mm. Suggested crochet hook size J10/6mm. Dyelotted: we try but are not always able to match dyelots. Care: hand wash, lay flat to dry, do not iron, do not bleach, it can be dry cleaned using P solvents. Imported.