Eric S. wrote a review of Outdoor Research Hydrolite Pack Sack on November 14, 2007
I bought a pair of the #1 size and 1 of the #4 in spring of 2005. I spent that entire summer in the backcountry with these sacks and it didnt take long before they became one of my favorite pieces of gear. Excellent, flawless build quality that will take anything you throw at it - I used the big #4 as a bear bag for all my stuff and the webbing strap on the bottom showed no sign of stress from being hung upsidedown and the drawcord was strong enough to keep everything from falling out during the night. Also, I never lost any sleep over hoping that all my food, clothes, etc. were staying dry in the downpoor - Hang the sacks upsidedown and a firehose wouldn't make it inside. END OF STORY: These things are bomber and a great bang for your buck!