To achieve optimum results, we cross check yarns ordered from JohnLewis.com to ensure they all carry the same dye lot number. This means that all yarns ordered in a single transaction will come from the same dye lot. Rowan's Felted Tweed aran yarn is a sumptuous blend of merino wool, alpaca and viscose. Ideal for knitted garments and accessories, the beautiful rustic palette of this unique yarn makes it perfect for striping and other colour work.