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 10/6mm. 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.