Lightweight 1/8" white twill tape, 250 yard spool
The price of this roll is *much* cheaper than a few of the individually-packaged yardage you normally find in fabric/craft stores (plus it's almost impossible to find this width anywhere).
I purchased this twill tape for use in drawstring casings and to support seams in early 19th century clothing reproductions. It shipped very quickly, and is heavy enough to do its job while not being bulky. I highly recommend anyone use this twill tape for drawstrings rather than narrow ribbon because it hangs so well.