Red Heart Buttercup Yarn. Buttercup is suitably named as it is butter-soft. This light and airy yarn will work up quickly for baby garments; blankets; and toys. Its delightful hand will make any garment tempting to snuggle. Weight category: 5; 60% polyester/40% polyamide; 1.76oz/50g; 72yd/66m. Gauge: 12st x 16r = 4in/10cm on size 11/8mm knitting needles; 10sc x 10r = 4in/10cm on size L11/8mm crochet hook. Care: machine wash cold; dry flat; do not bleach; do not iron; dry cleanable. Imported.