Red Heart Heart and Sole Yarn, Skyscraper Great yarn for making socks 73Percent wool, 27Percent nylon 187 yards length Size us 2 knitting needles and size d-3 Crochet hook recommended for most projects Machine wash warm; dry flat Size 1 Super Fine 73% Wool 27% Nylon 187 yds. (171 m) per 1.76 oz. (50 g) Machine washable