Description from website: This modern take on the classic argyle necktie adds a bit of colorful whimsy to any wardrobe. The diamonds down the center are made using a mitered (a.k.a. modular or domino) knitting technique, where stitches are picked up for two sides of the square and double-decreases are made in the middle of every other row until you come to a point. The triangles along the sides are just half of a diamond. This method gives a patchwork feel without the hassle of sewing seams.