The framing cord is a white cotton braid but everything else is that rope-like twisted cable cord. Adds an interesting textured diagonal pattern to the fabric.
The construction technique is shown starting with part one of a seven part tutorial.
Here's another one like this:
simple one button rope bracelet 2577
Take a look in the fiber art design section of my Etsy shop to see this design as well as some other bigger and wilder variations.
design and photographs © copyright 2013 WhatKnotShop