Used inside a backpack on a 7-day whitewater canoe trip. It kept my gear dry through rapids and two days of rain. Recommend to go inside another bag to organize and keep gear dry as it isn't durable enough on its own. No issues on the trip where it did see some abuse.I used this bag as an external storage bag for food on a long hike. We also used it to hang our food at night. Worked fine for this, and the water resistance was put to the test during a ridiculously bad rainstorm that lasted several hours. While the interior contents were damp, the bag did at least keep the book of the water from getting inside the bag. Use a second layer of protection like I did if water proofness is paramount. Bag is very lightweight.I backpack and always need a bag that will protect my clothes or sleeping bag. This isn’t a true dry bag, but it’s very water resistant. I’ve been using this brand for years.Great bag and really good priced!Took on the Deschutes and worked great!Used for holding and hanging food in the backcountry of Montana, The clip broke off day 2 in grizzly country making it a pain to hang every night on a 7 day trip. I bear-ley survived.These are terrific stuff sacks in my backpack. I have a few of these bags in different sizes and colors for different gear. I love how they reduce down to the size of the largest items in the bag and then seal out air and water! Highly recommend these bags for your backpacking gear!It is perfect . I liked it and it is light weight . I do like Osprey dry bags better but this is fine .Lasted 5 mins !! And the wrong colour !!! C lasps broke. Straight in the bin.. don’t waste your time buy something more expensiveGreat product which meets my needs exactly.Thin material makes this very lightweight.Sehr zufrieden. Super leicht, (geht natürlich noch leichter) aber diese sind ein super Kompromiss! TOP!Durch die weiße Innenschicht super Überblick und von außen Blickdicht! Diese ultraleicht Teile sind ja sonst so dünn, das man durchschauen kann… das wollte ich nicht!Diese Beutel sind für ihr Gewicht super robust und wenn sie richtig verschlossen sind (3x gerollt) auch wasserdicht. Wenn man einen Schlafsack „Komprimieren“ will… sollte man evtl. einen Sack nehmen, der ein kleines Drehventil hat, so lässt sich die Luft besser herausdrücken als bei diesen. Mit dem Rollverschluss sehr kompliziert.Trotzdem für alles andere sehr zu empfehlen!!The bag itself is excellent (as usual from Sea to Summit) but the product description includes the phrase "Black, Small/4 Litre" which is why I expected to receive a Black 4 Litre bag. Instead I received a Red 2 Litre bag. In hindsight I can see the different sizes have different colours and the "red" bag was the one on sale. But other buyers should be beware!