Strange sack

[Werewolf]

.. this object, a light knapsack, is a container,
   and can be referred to as 'light knapsack brown'.
It is of 10th level, weighs 1 pound, and is worth 1 gold and 19 silver.
You can wear it around your body.
Capacity: 0#  Maximum weight: 200#

Note that it's capacity is zero. I won't buy such a sack if I knew it beforehand!

[Habbakuk]

Fixed.