I'm looking into buying some NDs and GNDs soon for the Cokin P system. I think I've found everything I need: filters, holder, adapter rings and a case of some sort. The case is what's giving me trouble; I can't really find any information on them. The little information I can find is all for soft cases intended to be kept outside of a bag. I'm looking for something I can fit inside my backpack, a Lowepro Flipside 300. I'm not interested in keeping my filters on a belt or something outside of my backpack (unless its absolutely unheard-of to keep them inside a bag).
I have absolutely no experience with these types of filters, I have never seen nor touched these filters. It is my understanding that the Hitech filters I'm buying are made of "optical resin," and that they sometimes can be bent (?). I'm assuming I need a somewhat rigid case to store these in. I don't see myself having more than 4 filters in the near future. For the purpose of this suggestion, money is not an object, I'll evaluate my budget once I see what's out there.
Thanks. 


Thanks!
