Does anyone have any experience with the Sea to Summit Ultra Sil Dry Sacks? I was looking at the Base gear site after the postin about it a couple of days ago and I am looking for a bag to take out when I go Ocean kayaking and these seemed pretty good to me and a pretty reasonable price.
http://www.basegear.com/sea-to-summit-ultra-sil-dry-sack.html

If no one has experience with these could I get some suggestions. Keep in mind I am in Okinawa Japan and have to order everything on line.