Stick butter knife under crescent-shaped jaw, as picturedApply upward pressure to knife, releasing the jaw and revealing the teeth-like claspClasp the band in placeSlide band into jaw opening, beneath the teethPress jaw down to close, until it clicks into placeOpening the claspOnce the band is attached, flip the clasp overLift up the safety latch by holding band and using thumb nail to apply upward pressure