CASANOVA'S TIP:  "Dry Bag" Is Only A Name And Does Not Certify Or Qualify Any product Watertight Or Submersible!  When Using A "Dry Bag" Always Consider The Waterproofness Of Each Item Before Placing Into A "Dry Bag" Of Any Type Or Brand That Is Not Specifically Rated "Water-Submersible".  Our Field Tests Of a Seattle Sports "Dry bag" For Small Electronic Items Failed To Protect An iPod When The Dry Bag Was Sealed As Instructed And Tossed Into A Lake, Allowing it To Float For Several Minutes Against A Mild Shoreline.  The Natural Capillary  Action Of Water, Enabled The Water To Seep Into The Rolled-Down Top Seal And Into The Bag Where It Destroyed The iPod!  We Have Now Stopped Offering Those Types Of Small "Dry Bags" With Misleading Advertising.  To Protect Electronics, Food And Clothing With A High Level Of Submersible Protection, In A Soft Bag Form, Consider Using The Barrier Liners We Offer.  After Years Of Field Testing Around The World, In real World Applications, The Thick Strong Barrier Film Bags We Offer Can Be Used To Seal Individual Items And Then Place Them Place Them Along With Other Items Into A "Dry Bag".  These Barriers Bags Are Highly Resistant To Puncture, And Also Provide A Level Of Scratch And Exposure Protection From Other Items.  As A Food Protector, The Barrier Film Does Not Enable Air To Pass Through; Animals Cannot Smell The Contents!  (Mice, Bears, Dogs, Cats, Rodents, Bugs, etc..)