How does kumihimo work?

In the video tutorial, Monique braids her round bracelet (with the round disc) using 4 strands. The flat bracelet is braided using 5 strands with the square disc. Monique details in the video how to calculate how much yarn you need.

As she explains: if you want to braid a bracelet of 20 cm, you need strands 3 x 20 cm long (i. e. 60 cm) in each color. If you want to use a doubled strand, like she does in the video, to make a thicker braid, then you need twice this length. This means each strand needs to be 120 cm long.