Cascade Yarns - Ultra Pima Fine - Natural 3718 Ultra Pima Fine is the finer gauge version of Cascade's super-soft pima cotton and great for all seasons! Ultra Pima Fine is a sport weight knitting yarn so it's very versatile to design anything from a sweater to baby garments! Ultra Pima Fine is much softer than other cotton yarns and does not feel stiff. Because Ultra Pima Fine is mercerized using a different process, we believe it's in a league of its own. Ultra Pima Fine is machine washable for easy care. 100% Pima Cotton. Sport [2] weight. Care: Machine wash. Approx: 136.5 yds / 125 m. Weight: 50 g / 1.75 oz Knitting Needle Size: US 3 - 4 (3.25 - 3.50 mm) Knitting Gauge: 24 - 26 sts = 4" (10 cm) Crochet Hook Size: E / 3.50 mm (F / 3.75 mm, 6 HOOK / 4.00 mm) Crochet Gauge: 17 sc = 4" (10 cm)