Perle Cotton, aka Pearl Cotton or Coton Perlé, is a beautiful thread that makes your stitching enjoyable and beautiful. It's non-divisible, meaning you use it just as it comes. Its tight twist resembles tiny beads, resulting in its name. This collection includes size 5, which is the most common size with the most colours available. It is second in thickness with #3 being thickest, through #5, #8, and #12 (thinnest). It comes on either balls or skeins - see the individual product listings for more details.
DMC describes it as a "...luminous cotton thread is highly mercerized and non-divisible. It's soft and silky and ideal for embroidery, needlepoint, hardanger, blackwork, redwork, pulled thread, smocking, applique, crochet, and other types of creative stitchery."