Waterproof Pouch for iPhone 3GS (200-PDA016)
August 11th, 2009 
Sanwa has announced its 200-PDA016. It is a waterproof pouch for the iPhone 3G and 3GS, allowing you to enjoy music on the beach. The pouch is IPX7 which means that it can stay under 1m of water maximum up to 30 minutes.
[via Akihabaranews]
Where can i buy the Waterproof Pouch for iPhone 3GS (200-PDA016)?
it’s japan site, not sure the ship out of country or not.
Check out here