Good costume.  Full set, comes with a mask and feet.  I would recommend spending a bit more and buying a separate mask Two Bit Roar Adult Mask Size One-Size.  Did just that upon reading one of the reviews and it worked out great. I have a separate review on it.

As far as the costume - it is hairy and be prepared that it will initially shed quite a bit but gets better.  I would recommend putting the slippers on as depending on your size the feet may be too big.  Also the string on the back is not sufficient to conceal the back completely so I have actually sewed a Velcro strip on the back so it closed completely up.  May require some time to do but even 2-3 sets of Velcro squares sewn on the back would do the job to close it up and would make a more realistic gorilla out of you.