CARON-Naturallycaron.Com Spa Yarn is 75% microdenier acrylic and 25% bamboo 3 ounces (85 grams) 251 yards 4=22 stitches on size 6 needles suggested crochet hook: G6 dyelotted and can be machine washed and dryed. Spa Yarn is made with a unique multi-ply construction and microdenier fiber that provides a superior level of resilience and silky softness. Made in Turkey.