This sport/DK weight yarn from Malabrigo is made with 60% Merino wool, 30% cupro and 10% silk.  Each 100g (3.52oz) skeins is approximately 328yd (300m).  Suggested hook size E-4 to 7 or 3.5mm to 4.5mm; needle US 4 to 6.  Hand wash in cold water and lay flat to dry.