Worsted Weight Yarn, Yarn for Crocheting, Baby Soft, 100% Acrylic Yarn, 8 X 1.76 Ounce Balls 8 beautiful and complimentary 100% acrylic baby soft worsted weight yarn. Each ball is approximately 50g (1.76 oz.)  Perfect yarn for crocheting and perfect for any project Worsted weight yarn: USA (Medium or 4) UK (Aran) 9 WPI (Wraps Per Inch) Hand Wash and Dry, Do Not Bleach, Do Not Iron Recommended knitting needle size (mm): 4.5 - 5.5 : Recommended crochet hook size (mm): 5.5 - 6.5