Bernat Berella 4 knitting yarn is "The Afghan yarn"—modern colors are stepped from tone to tone with matching ombres, No dye lot, Soft premium acrylic Care Instructions: Machine washable and dryable * 100% Acrylic * 3.50 oz / 100 g * Length: 195 yd / 175 m * Tension: 18 sts - 24 rows = 4" (10 cm) * Suggested Knitting Needle: 5.00 mm, US - 8 * Suggested Crochet Hook: 5.00 mm, US - H/8