Can be made with two Aran Weight strands, two Worsted Weight strands of yarn held together or using one bulky strand of yarn by itself. Each will result in a different type of garment. The Aran weight will create a more open and lighter fabric (pictured here), while the worsted will be a bit denser and stitches will be more prominent. The bulky weight will create a dense fabric with high stitch definition. I have made a combination of them all through the years and they have made great gifts.