8ply Cotton - 4 Washcloths to Crochet Heirloom 474 Crochet patterns for 4 different washcloths using 8ply cotton yarn. Each cloth requires 1 ball of Heirloom 8ply cotton. You will also need a 4mm crochet hook. Finished washcloths measure 20cm x 20cm. Heirloom Pattern Leaflet 474 Crochet Washcloths $4.95 This pattern leaflet was added to our range on 22nd September, 2016.