They are made from quality German sock yarn which is a blend of 75% superwash wool and 25% polyamide. It is skin friendly, breathable, durable and machine washable.
They measure about 24cm (9.45 inches) from heel to toe, but are quite stretchy. They would comfortably fit an US/Australian women's size 8, UK size 5, European size 38.
See all my other socks here: http://www.etsy.com/shop/Spacefrog?section_id=5888933