BitterSweet makes sleek hair tie bracelets out of stainless steel. Slip the bracelet on, then the elastic over to rest in the groove. The metallic designs look great whether you're at home, the office, running errands or enjoying a night out. The story behind the BitterSweet is super sweet. Shireen Maria Thor and her husband, Arni, are both engineers. One Christmas, Arni created a metal bracelet holder for Shireen’s elastics. He engraved her name in Persian (her mom’s native language). But because Persian reads left to right, it said Maria Shireen—which translates to BitterSweet.