Combed, singed by flame and twice mercerised giving it its brilliance & strength. 3 ply. DMC Special Lace Thread or tatting cotton is best to use to make very fine and delicate lacework such as edges of handkerchiefs, doilies, collars, gloves etc. Washable at 95C/190F. Chlorine proof. Can be tumble dried low. Do not dry clean.