DMC Cotton Embroidery Floss in 489 luscious colours! It is made from long staple Egyptian cotton and double mercerized for a brilliant sheen, and is the most recommended floss in the world. This premium thread is made up of six size 25 easily separated strands, which allows you to customize the thickness of the thread by choosing the number of strands. DMC Embroidery Floss is 100% colorfast and fade resistant.
What does mercerized mean? It is a method of treating cotton fibres to improve the thread made from it. The threads are passed through a bath of a special liquid while under tension, and this helps the dye to be taken up into and stay in the cotton fibres, greatly improving colourfastness. It also creates a bit of a sheen on the threads. This sheen is enhanced by having the thread pass through a phase where all the tiny little threads that stick out are burned away, so that the thread is smoother with a greater lustre.
DMC six strand cotton floss is double mercerized, which is one of the reasons that it is the most popular brand of cotton floss in the world.