Classic yarn is a Traditional Acrylic yarn;100Percent Acrylic;Recommended knit needle size: us 8 (5mm) for gauge: 17 sets x 23 rows= 4ﾃ｢ﾂﾂ (10 cm);Crochet hook: i-9 (5 mm) for 12 sec x 15 rows = 4'' (10cm);Meter age/yardage: 134M/146yds