Squeeze open to add loose tea leaves and release. Once closed, dip it into your cup of hot water and steep. Voila, you have tea.
It's old school, but it does the trick. Works with most black teas, but not so well with larger leaf teas such as Oolong Teas or Jasmine Pearls.
Don't overfill the ball. You need the water to flow around the tea leaves for a proper steep.