This beautiful yarn is in a 100g Hank and made of a machine washable 75% superwash merino wool/25% nylon blend. The merino makes it springy and soft, the nylon makes it more durable for those projects with wear like socks. The yarn is classified as fingering sock weight and is perfect for soft, warm, and durable socks. Professional dyes are used and they are environmentally friendly! The dyes are non-toxic, heavy metal and chrome free. I wash the yarn with Dawn dishsoap after dyeing to make sure they don't bleed when you get the yarn. Please wash items made with this yarn in cold water and air dry or tumble dry on low heat. Feel free to message me with any questions and check out my other yarns available!