Darning Yarn Set # 1 by CloverThis sweet set of darning yarn has 8 bobbins with three colors per bobbin. A wonderful way to ensure you have a color you need for mending socks, sweaters, or any knit fabric. The yarn itself is 50% wool and 50% acrylic, which will add some strength to your mends. There are 8 cards per box, each card has three colors. Each color contains approximately 16 meters of yarn. Each box has approximately 384 meters in total.