How to unclasp: The ball is thick - please pull both ends of the bracelet inwards gently so that the ball will have a wider gap to unclasp easily. Unclasp both loops. Push the button to unlock and pull apart.To secure: Push both ends of the bracelet in a bit so that the ball has more room to fit through the fastening. Clasp both loops to lock.
If the fastening is loose: Over time, the fastening might loosen with usage. To tighten the fastening again, grab a black bobby pin (make sure its not sharp or it will scratch) or you can simply use your fingers; hold the loop vertically and pinch together to make the gap of the loop smaller.