R2Depot Waterproof Dry Bag, 5L/10L/20L/40L/70L Dry Storage Bag for Kayaking, Gym, Hiking, Swimming (Purple, 20L)...

Water got into bag news paper was soaked.

Used this to separate out my sleep system in my huge 100L dry bag. The color made it easy for me to know what was in what bag since I took everything out of their little stuff sacks and just shoved it all into this one bag. Worked great and the double dry bag kept my mind at ease that everything would stay dry.

This review is for the 70 liter bag. I'm surprised this isn't talked about more on backpacking videos. It's definitely not as cheap or as light as using a trash bag or a compactor bag, which will keep your gear dry from rain, but this can be sealed, in case you fall in a creek, or if you are on a canoeing trip and your pack falls out. I have a 65 liter backpack (internal volume, not including external pockets), so this technically should enclose all my gear, but I only put my (synthetic 0 degree) sleeping bag, sleeping pad, and pillow in it, which leaves plenty of bag left to fold it over. It would be really tight to get everything in it, so I guess the 70 liters is the unsealed volume. But I'm not putting my bear canister or stuff like that in it, so it definitely works for me.

This is a very thin material that I can't imagine lasting very long. It feels like something you throw away after one use.

This works well for what I need it to be - a bag to sink wash laundry in while traveling. It's a good size, dries quickly when I'm done, and is lightweight. It is not completely waterproof, however, and tends to "sweat" water after just a minute or so. This happens whether the bag is right-side, or inside, out. Would not be good for a camping/outdoors trip where you need a dry bag to be 100% waterproof. FWIW, I have a similar light weight one from another manufacturer which does seem to be 100% waterproof, so it's possible. Just not with this bag.