Plys: 4ply. WOOLCRAFT NEW FASHION DK Knitting Yarn Wool - 50g Double Knit Ball Acrylic. Suggestion crochet needle: About 2.5 mm - 3.0 mm. Material: 80% Long Staple Cotton + 20% Milk Fiber. Because it is currently peak season for yarn sales, there will be very slight color differences in the products produced in each batch by the factory.