Cut a length of Lycra that is about 1 ¼ inches wide, by however long you need. Have the greatest degree of stretch going from long side to long side.

Fold the fabric in half - right sides together - along the long edges, and stitch up the length of it, making sure to stretch the fabric well as you do so.

As you finish, leave a long chain - about 6" - trailing off the end.

Tie the end of the trailing chain to the loop of a drawstring threader. If you don’t have a drawstring threader, tie it around the head of a crochet hook, or through a large safety pin.

Run the tied off end through the length of the tube, starting at the end to which the chain / cord is attached.

Pull the needle through the opposite end. As you go, gently ease the bunching tube off the back end of the needle, and onto itself. Be very careful not to break the thread / cording!

Once the whole tube is turned right side - out, clip off the end of the tube with the yarn / cord.

Cut the tube to the necessary lengths, if the original length was long enough for several pieces. I usually cut 60" lengths, and divide them into 4, or more/less, depending on what I need.

Any ends that are not to be sewn down to anything should be knotted off. This will prevent any raveling or fraying of the

tube seams.