Sirdar design 7747 features a summer crochet cardigan with lattice back panelling, in either long sleeved or cap sleeved options.  Crocheted using Cotton 4ply, a machine washable yarn made from 100% cotton, creating neat & clear stitches. Sirdar design 7747 features a summer crochet cardigan with lattice back panelling, in either long sleeved or cap sleeved options.  Crocheted using Cotton 4ply, a machine washable yarn made from 100% cotton, creating neat & clear stitches.