The original pattern is by Karen Montgomery and uses two strips of striped fabric and when you cut out the triangles it is approximately the length of the strips minus the height of one triangle. The pattern that you refer to (if it is the one I found on Google) is a take off on her pattern and uses three strips of fabric. I have used the original fabric many times - finished size is always shorter than the original two strips. It is a great pattern and works up quickly. Good luck!