Estako Rock Star 9% Merino Wool 70% Polyamide 21% Acyrlic Light-DK weight soft Knitting and Crochet Yarn . Each ball 1.76 oz (50gr) 125 yds (115 m) Recommended knitting needle size: 4 - 4.5 mm, 8-7 UK, 6-7 US / crochet hook size: 3-4 mm, 11-8 UK , D3-F5 US Merino wool is a type of wool that comes from the Merino breed of sheep. It is highly prized for its softness, warmth, and durability, and is widely used in the production of clothing, blankets, and other household items. Merino wool fibers are finer and softer than those of other breeds of sheep, which makes them more comfortable to wear next to the skin. They are also highly breathable, which makes them suitable for use in clothing for a variety of climates. With flat, hairy and metallic shiny appearance, making Rock 'N' Roll even more unique and outstanding. Great for evening or party dresses and garments. Also accessories such as shawls and bags. CERTIFIED, DURABLE, AND ECO-FRIENDLY: The yarn is CERTIFIED as STANDARD 100 by OEKO-TEX to be FREE from Harmful Chemicals and Artificial Synthetics.