Espiral is 100% alpaca in a worsted weight. Each 100 gm skein is approximately 165 yards. The gauge is approximately 20 st / 4″ (5 st/1″) using US #8 (5.0mm) needles. Each skein will be somewhat different. The warm shades (#01-06) are dyed over Arequipa (browns & tans) and the cool shades (#07-12) are dyed over Barranca (black & gray).