Thanks Brian and all...a lot of good points and has me thinking. I do like just rolling up the map case and stuffing it to the side pocket. After a quick visit to the big A, I see that 4mil. zip bags are out there. I'm just a bit too timid to rely on a freezer bag at this point in my hiking. I should be able to find single bags in 4mil in my travels...if not I always have Glad as my fall back. Last few trips I have been starting to worry about my map costs....and will look into printing my own- and cutting down for the hike.