Introduction: Slide and Lock Loop
This easy to tie knot makes a nice lanyard or zipper pull.
Bring working end (WE) to the left over standing end.
Bring WE under standing end.
Bring WE up through the loop.
Bring WE down through the loop going under, over, under the three strands.
Tighten the knot so it still lies flat.
Adjust the size of the loop by pulling on A or a.
Lock loop in place by pulling on B and b.