So I'm in Walmart shopping for some forgettable item. I found myself passing through the camping section, which I normally don't pay any attention to, but noticed a package of dry bags. My first reaction was to keep moving, thinking that these things have got to leak like a sieve, plus be heavy as lead. But, I stopped & looked - $10 for 3 bags ... Um? Made by Outdoor Products - I've heard of them ... Um? Still, they must leak! Well, OK! $10 to prove my suspicion.
I get home, open the package and find 3 dry bags labelled 2, 4 & 8 liters. I measured them and sure enough, the volumes looked accurate. Then I weighed them, 3.5 oz. for all three bags, total! Hey! This is getting interesting, but what good is a "dry" bag that's all wet?
So, it's time for the tee shirt test. I loaded each bag with gray tee shirts (obvious discoloration when wet) and turned on the shower and threw them in. After letting it run a few minutes, I got in and while taking my normal shower, kicked the bags around to make sure they got varied exposure. Note: my shower can easily match a real downpour.
Time for the results. I dumped the contents of the bags onto the bed & inspected the tee shirts. NOT A DROP OF WATER!
3 bags, $10, watertight, 3.5 oz. total - Hey, I'm ending this post: gotta go to Walmart and buy some more UL camping gear! :)