Dritz 468 Cord Stops. These cord stops are great for the cording on jackets, sweatshirts, sweatshirts,laundry bags, and purses. Anywhere you have cording you'll need a catch to keep it from pulling into its casing. Why tie it in a knot when the cord stop makes it adjustable. 

Dritz- Cord Stops - #468 - Black #1.  Machine Washable and Dry Cleanable. Available in Black only. Priced per package of 2 cord stops.