Floss: 6 ply. 100% cotton floss. Single skeins are usually in stock. 12 skeins per box. Boxes of Anchor floss are a special order item and may require four weeks for delivery. Multicolors: Unlike overdyed threads, Anchor Multicolors are colorfast and an excellent value! Multicolor floss is a six-ply divisible 100% Egyptian cotton floss. 8.75 yards per skein.