Go to the source: http://www.riteintherain.com/ItemForm.aspx?item=390-4F&Category=

for waterproof notebooks that is, not Moleskines. A little bigger and soft covered not hard covered, but they seem to be as close to a Moleskine as you're going to find waterproof wise.
_________________________
A gentleman should always be able to break his fast in the manner of a gentleman where so ever he may find himself.--Good Omens