Can someone help me with how to do this hair style

I got this pic off of the internet and it looks like some kinda knot, but I was wondering if anyone could please help me with how to do this??  Thanks

Make a pony tail with out adding the rubberband. Just hold the pony tail in your hands (top half of your hair only just like the photo.) Split it in two pieces, and tie just like you are tying a shoe. Make an actual knot. It will not stay with out product and bobby pins. So do not have the traditional "OMG, I can not tie my hair into a knot" freak out. It is O.K. and comes out very easily.