This singly ply fingering weight yarn from Madelinetosh is made with 100% Superwash Merino wool. Each 100 gram skein is approximately 420 yards. Suggested US 1 - 2 or 2.25 - 2.75mm needle or US B1 - E4 or 2.25 - 3.5mm hook. You can Machine wash cold on gentle cycle and air dry flat. Hand-Dyed in Texas from wool ethically sourced in South Africa.