From flax 18/2 to 60/2, white, bis, ecru

The size of the matte linen yarn for lace is expressed in metric number (NM), which corresponds to the number of meters per gram or kilometers per kilogram. It is generally said that the titling (the size of the thread) expressed in metric number is a "false friend": the figure shown is inversely proportional to the size of the wire. Thus, an NM 18 is larger than an NM 60.