EmpressCao wrote a review of Outdoor Research Ultralight Dry Sack on August 14, 2010
This sack performed above my expectations, keeping items dry even when thrown in the bottom of a canoe with standing water. I do wish for the larger sacks that the fabric was a bit thicker, but in terms of price this is really great. Definitely recommend. The smaller 10L I got really compacts clothes nicely as well.