DMC Pearl Cotton (aka Coton Perlé or Perle Cotton) is a highly mercerized, non-divisible, lustrous 100% cotton thread. The twist of the thread is how it received its “Pearl” description. The thread is soft, silky, does not fluff or kink, and 100% colorfast. Pearl Cotton is a supple thread that provides wonderful volume and dimension to your embroidery. 87 yard ball.