Uptown DK is 100% pill-resistant acrylic yarn. Soft and easy to work with, Uptown DK's wide array of solid shades coordinates beautifully with self-striping Uptown DK Colors. 250m (273yds) and 100g (3.5oz). 100% Anti-Pilling Acrylic. Machine wash cold, tumble dry low.5 balls/bag. The recommended knitting needle is 4mm (US size 6) = 22 sts x 28 rows = 10cm (4″) in ST st. The recommended crochet hook is 5mm (US size H-8) = 16 sc x 19 rows = 10cm (4″). Remember to ALWAYS check tension/gauge before beginning your project.