Aunt Lydia's crochet cotton. This high shine mercerized cotton crochet thread is perfect for both small and large crochet projects. This yarn is available in a wide range of trendy neutral basic solids and attractive colors that are ideal for home décor and fashion projects. A 7/1.5mm crochet hook is recommended. Care: machine wash warm, gentle cycle. Dry flat. Do not bleach, do not dry clean. OK iron. Imported.