this is a view into my Duluth pack.

if you want to keep your gear really dry use the method we use out on the lakes..bag inside a bag inside a bag,with the small stuff like soxs and tee shirts inside zip locks.in the photo the large plastic pack liner,sold by the Duluth Pack Company to fit their portage packs,is 6 mil thick.inside that are two heavy nylon stuff sacks also lined with 6 mil plastic bags made to fit them.and inside one the clothes in zip locks.that's a lot of plastic for water to seep thru!!..it's just not the chance of an upset in bad water but bilge and rain water.with no place to go and get dry except a campsite,no huts or roads to hitch a ride into town,having dry gear is a top concern and at the canoeing blogs and sites we get into the subject all the time with every which way to water proof everything..some just put it all in plastic barrels!!!