West Yorkshire Spinners Signature 4 Ply Sock Yarn. All shades of the award winning British sock yarn by West Yorshire Spinners. Well loved and favoured by knitters and crocheters nationawide for it's smooth texture, excellent stitch definition and alluring shades. Signature 4 Ply is a sumptuous yet durable blend of 75% wool and 25% nylon, containing at least 35% luxurious Bluefaced Leicester. Cocktail Collection West Yorkshire Spinners Signature 4 Ply