Original Quality Women's Clothing with Packaging .Little Di Navy Button Sweater .Yarn Highlights: (78% Sheep Wool, 22% Nylon) .1. Golden Ratio of Ingredients, Balancing Softness and Durability: 78% sheep wool provides a natural, delicate, skin-friendly touch, with inherent warmth and luster; 22% nylon enhances the yarn's toughness and wrinkle resistance, addressing the common issues of pure wool deformation and pilling, ensuring a crisp texture even after prolonged wear.2. Special Structural Design, Breaking the Conflict Between Warmth and Lightness: The single strand of 3.6 specification combined with a hollow core technology locks in air for enhanced warmth, while the core strengthens the yarn's support. The fabric is over 30% lighter than regular knitted yarn, providing a weightless wearing experience in harsh winters and comfortable breathability in daily use.3. This yarn must be spun using a specially designed spinning machine and can only be produced with the German STOLL machine 252 needle type! .Size: S-XL