Hayden-Harnett's adjustable Navajo cuff is a toughened-up take on a schoolyard friendship bracelet. The double braided cords pop against the bracelet's black leather band, and at less than an inch wide, it's slim enough for stacking. The cuff is currently on sale for 25 percent off at the official Hayden-Harnett website.
$48 at haydenharnett.com. Currently on sale for $36.