I don't know how long mine is supposed to be (only had the pregnancy one- think it was supposed to be more than 2, but they gave up after 2 <img src="i/expressions/face-icon-small-wink.gif" border="0"> ). I had heard 2 though- if it's 4, I need to plan to bring more to do! <img src="i/expressions/face-icon-small-shocked.gif" border="0">