This single ply worsted weight yarn from Malabrigo is made with 100% merino wool. Suggested US I-9 to K-10 hook or US 7 to 9 needle. This yarn can be hand washed in cold water and can dry flat. Each 100 gram skein is approximately 210 yards. Be sure to get enough yarn to complete your project since each bag is a different dye lot, and skeins may vary from bag to bag. Skeins may vary one from the other even within the same bag. To ensure random color distribution, work from two balls of yarn at once, alternating a few rows from each ball.