OPSAK Odor Proof Bag 12" x 20"

These bags have worked great for years while backpacking. Have had no issues with critters smelling my food inside. You have to be a little careful with them because they will break if you try to force them in a backpack.

We have a dog named "Bear". He's very intelligent, and very food motivated. We adopted him after he failed out of service dog training because he couldn't be trusted around food. He's perfect in every other way, but he eats everything left unattended. He has eaten through multiple backpacks to get at a snack inside, and recently ate an unopened can of dog food off the counter, leaving only the crumpled metal remains on the living room floor. It took us a minute to even figure out what it was. Last night I put a cooked hamburger and some buns into an Opsak and left it in a plastic shopping bag on the floor about six feet from Bear's food bowl. He didn't touch it all night. We left this morning to run errands, and he did steal some bread off the counter, but he didn't touch the Opsak. That was when I decided to write a review. These things are amazing. I'm going to order some of the larger ones to pair with an Ursack for backpacking, and I can't tell you how much I'm looking forward to never having to hang another bear bag! Not to mention, now we will be able to leave the packs in the car with Bear if we need to run in and grab a bite to eat, pay for gas, etc... on our way to the trailhead. These solve a lot of problems for us, because they actually work.

Performs as advertised: seals and is odorproof. I like to have a small stash on hand for packing up before heading to the outdoors. Works great for snacks.

These are great but I find them to be a bit pricey for the actual times you can reuse them. If you are very careful, they hold up but they get creases and dents in the plastic which is pretty thick and sturdy. They seal and reseal well if you're very careful opening them. Eventually, the top will tear no matter how careful you are. I have been able to use them for two, maybe three trips, depending on what's in them. Again, it's good to have the odor lock and waterproofing but they don't last all that long. The corners are stiff and can poke through things but I use a fairly thick dry bag for my food so it's not an issue

Backpacked in a area that didn’t require bear canisters. Read a lot of reviews about these bags and decided to try them out.. Worked great. No encounters with wild life wanting our food. Maybe we were lucky maybe it wasn’t the bags but hey how does anyone know. We traveled lighter this way and there is a lot of reviews that talk abt the seems ripping easily. Well, that could happen for sure! We were as careful as possible and didn’t overpack the bags and they were fine. Could see that it could have been an issue though. It would be amazing to have this company redo these bags with a stronger more reliable seem at the zipper.

These odor proof bags worked excellently to keep odor to a minimum when in bear country near Cody, Wyoming hunting. We never had any encounters with bears. The bags seal well and had a good capacity for storing food for 5 days. They are easy to use and added very little weight to my hunting pack. I should be able to reuse them for several trips into the backcountry. I highly recommend these for backpacking.

Our scouting group did a backpacking trip in the back country of Mammoth Cave National Park recently. Don't have to worry about bears there but there is plenty of other wildlife that would love to snack on our food (mice, raccoons, etc.). Each boy got one of these bags to hold all of their food for meals/snacks plus any toiletries that are scented (e.g. toothpaste, deodorants). These easily held 3 days of meals. Very durable - none of them ripped or tore despite being taken out of/put in packs all weekend. VERY good at containing odors - jerky and other strong smelling food could not be smelled when the bags were zipped closed. Highly recommend!

I've ordered/used 3 different sizes of the OPSAK. I had issues with the 9x10 size, not just once, but twice. The first set of 2 failed me on the trail the first time out. In this case, the sealing "ridges" separated from the bag, one of the ridges from one side and the other from the other side. This was not just for one of the bags in the 2 set, but for both bags. I sent an email through the company website regarding this, but never heard back (this has been about 3 months ago). Because I really wanted these to work for me, and the other 2 sizes of bags seemed to work well (and have for almost 200 miles on the trail), I went ahead and ordered another set of 2 9x10 bags. These again failed, not just the first time on the trail, but the very first day. This time the clear plastic on one side of the bag let go of the greenish seal portion. And again, not just one, but both of the bags in the set. Needless to say, I am disappointed... not just in the quality control of these bags (I point to QC, as the two other sizes did not seem to have the same issue, and bags manufactured at a later or earlier date may be fine), but in the lack of response from LOKSAK to my issue. I have since ordered 9x10 bags from a different company to replace the failed OPSAKs (but have not had a chance to put them to use).

As a test, I bought some guava and put it in one of these bags. If you’ve been near ripe guava, you’ll know it has an extremely strong and noticeable scent. This bag blocked it entirely. My dog could not smell it after placing the bag on the floor. This will work well for camping. I have zero doubts

Love this product. Quick delivery

Spot on

Great size and very durable.

Fast shipping. Super helpful product!