To estimate the length of cord:
To make a single layer knot, measure the circumference of the box + 30cm of cord
To make a triple layer knot, triple the above
Fold the cord in half and start with this point.
Pull the bottom cord under and up to the top right
Pull the bottom cord under the package and then over the loop then under this top cord
The cord will then go under, over and then under where the other cord ends.
Then with a mother cord, the same length, repeat Â this process two or three times.,
or simply stitch the two ends together Â and died it with the original cord.