The fabric edging of the Emmerson lip cord measures approximately 1/2" and the decorative cord is approximately 1/4" in diameter for a total width of 3/4" The size given in the general information is the diameter of the twisted cord; in most applications, the lip fabric is hidden in a seam. The Emmerson lip cord trim is great for pillow and cushion edging, table runners and edging on home decor accessories.Please note- due to the way in which this trim is manufactured, the size described is approximate.