I haven’t measured this, but the seller says 49ft so I believe it.  I usually describe it as my “50ft Octopus” as that sounds better!  It is big, anyway, so definitely not one for the children.  It flies well in steady winds, with its tentacles gently undulating, and draws a lot of attention.  If you buy one, be aware that the gaps in the stitching of the tentacles are supposed to be there to assist airflow.  I didn’t realise this at first and almost had them sewn up.  There’s always something new to learn in kite-flying!  Available from Emmakites for $189 in several colours and great value.