COATS & CLARK-Red Heart Shimmer Yarn. Shimmer is an elegant yarn that contains just a hint of metallic. The uniqueness is in this yarn is the ultra-fine metallic creates a subtle and sophisticated shimmer. The acrylic fiber has a nice loft which creates a very plush fabric. Shimmer yarn is fantastic on traditional worsted weight size needles but also fabulous for open stitch work and hairpin lace. Weight category: 4; 97% acrylic/3% polyester metallic; 3.5oz/100g; 280yd/256.03m. Gauge: 20st x 26r = 4in/10cm on size 6/4mm needles; and 16sc x 20r = 4in/10cm on size H8/5mm crochet hook. Care: machine wash cold; tumble dry low; do not bleach; do not iron; dry cleanable. Imported.