Continuous loop drawstrings (as seen on some sweatpants) can be tied with a modified “Ian's Secure Knot”. Unlike the two loose ends of regular drawstrings, w
How to tie an Ian Secure Knot
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Ian's Shoelace Site – Ian's Secure Shoelace Knot
How to Tie a Single Loop Drawstring - HD Multi-Camera
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How to tie the “Ian Knot” tightly – Professor Shoelace
How to tie an Ian Secure Knot
Two Loop Shoelace Knot – Professor Shoelace
Best Knot for single loop SWEAT PANTS