These bracelets are made braiding 5, 7 or 9 stands of Chinese Knotting Cord. The fabric is bias tape which you can buy or make. The Purl Bee’s Liberty fabric tape is so pretty but very expensive. It’s 7/8″ wide before folding for bias tape to give you an idea of the size.
For more friendship bracelets of all kinds go here or see these roundups – links top to bottom.