Online: www.REI.com
URL for this product:

From the U.S. and Canada — Call 1-800-426-4840
Mon. through Sun., 4 a.m. through 11 p.m. PT.
International — Call 1-253-891-2500
Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.

LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5

CLEAR

LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5

$13.50

(13)

Item # 758707

100% Satisfaction Guaranteed
Gear and Advice You Can Trust

Orders of $50 or more ship for free.
Learn more

To view videos or use the zoom feature on REI's websites, please download the latest version of Adobe Flash Player.

NOW PLAYING

Certified and field tested to be odor-, humidity-, vapor- and leak-proof, these LOKSAK bags ensure secure and undisturbed closure.

Great for preventing campsite animal intrusions because foods stored inside cannot be detected through the bags
Made with a patented, high-tenacity polymer, bags are flexible and shatterproof
Bags meet FDA and USDA specifications for food contact and can even hold boiling water or be used as food freezer bags
Use to store food, rehydrate freeze-dried meals or stow toiletries
Bags can also be used to safely transport human waste
Easy-to-use closures are as simple as using a typical zip-closure type bag, but provide water-tight protection
Transparent material lets you easily view contents
Package includes three 20 x 12.5-inch bags; each bag weighs less than an ounce
Waterproof to 200 feet

Made in USA.

Item 758707

with coupon code ANNV13
May 17-27 Details

Not a member? Add a Membership

View all LOKSAK products

REI Membership

REI Membership $20.00

LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5 Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews

LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5

3.1

(based on 13 reviews)

62%

of respondents would recommend this to a friend.

Pros

Lightweight (4)
Good design (3)

Cons

Loose lid (4)
Not durable (4)

Best Uses

Backcountry (5)
Day trip (4)

- Reviewer Profile:
- Avid adventurer (8), Casual/ recreational (4)
- What Is Your Gear Style:
- Survivalist / minimalist (4)

Reviewed by 13 customers

Sort by

Displaying reviews 1-10

Previous | Next »

Dec

2012

(2 of 3 customers found this review helpful)

2.0

Food scent can exist on outside of bag!

By dcn8v

from Washington, DC

About Me Avid Adventurer

See all my reviews

Pros

Cons

Best Uses

School
Travel

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

A friend of mine had these on a hike. How do I know? Because my hound dog sniffed them out in seconds. The thing is with foodstuffs, it doesn't matter how good the outer seal is or the material of the bag... If you get food on your hands and then touch the bag, say to seal it, the odor on your hands will be on the outside of the bag. It only takes 18 ppm for an animal to be able to smell something. Some animals can smell in parts per billion. Please do not use these bags and think you don't have to hang your food or put it in a canister- for safety's sake, ALWAYS handle food carefully.

Comment on this review

Nov

2011

5.0

works great!

By carpediemkath

from Tucson, AZ

About Me Casual/ Recreational

See all my reviews

Pros

Good Design
Lightweight

Cons

Best Uses

Backcountry

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

I got about 200 rugged backpacking miles on this Loksak before I developed a small pinhole and had to replace it. I used it on the Appalachian Trail where, in conjunction with a Ursack, I tied it to the base of a tree (well away from my campsite) every night. No animal ever found my food! On the occasions where bear cables were provided, people's food bags were chewed through by mice that climbed the cables. No mouse ever discovered my food. I can't say enough good things about this Loksak. I didn't have any problems with the zip closure and it never popped open on me, even when crammed in an over-stuffed backpack. I would definitely buy this again because the peace of mind in the backcountry is worth it.

Comment on this review

Sep

2011

4.0

Good Odor Protection

By I hate blisters

from Northern, Utah

About Me Avid Adventurer

See all my reviews

Pros

Durable
Easy to Use
Good Design
Lightweight

Cons

Best Uses

Backcountry

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

I have had these bags for a few months now and used them on a few overnight trips. They seem to be fairly durable but I am careful not to put anything too pointy in them.

As long as you are careful when sealing them up the seal isn't an issue and the odor is blocked.

I think the best test of this is on a recent trip we made a curry rice. You could smell the curry through the ziplock brand freezer bag no problem, but when we placed those in the opsak no odor until we broke then seal, but wow was it concentrated in the opsak.

I have been very pleased with these bags so far. I would say they are a bit on the pricey side, but so much more compact than a bear canister for areas where I'm more concerned about rodents then I am bears.

Comment on this review

Aug

2011

(2 of 2 customers found this review helpful)

4.0

tricky to seal but it really works!

By parashakti

from seattle

About Me Avid Adventurer

See all my reviews

Pros

effective
Lightweight

Cons

Difficult Setup
Not Durable

Best Uses

Backcountry
Climbing
Day Trips

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

I tested this bag before using in the backcountry. I put catnip in it and left it on the living room floor all day. My cat, who is usually crazy for the stuff, never showed the least bit of interest. So I took it on a 3 day backpack in the Cascades. Kept it in a stuffsack to protect it and hang it. Had no problems. On the last day I just put in the ground, very far away from my bivy. No nibbles! Thank god I don't have to use that heavy cannister anymore!
BUT .... it is a realy pain to seal the thing. It seems like it should be an easy zip-lock, but its not. You have to be very precise and double check it to make sure its really sealed.

Comment on this review

Jun

2010

(1 of 1 customers found this review helpful)

4.0

Works Great

By CT hikers

from Fort Collins, CO

About Me Casual/ Recreational

See all my reviews

Pros

Durable

Cons

Best Uses

Backcountry

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

Yes, these are a bit tough to get closed, but with patience they work great. They are durable, but need some TLC. None of the these are reasons I would not use them. They give that extra level of security when hanging our food that smells won't get out. We used 3 of them for 10 days on the Colorado Trail and opened and closed them 5 or 6 times a day and never had a problem. We'll use them again this year.

Comment on this review

Jun

2010

4.0

overpriced, otherwise OK

By Ben Crowell

from Fullerton, CA

About Me Avid Adventurer

See all my reviews

Pros

Cons

Best Uses

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

These have worked fine for me. I haven't had any of the problems people have described with them breaking open. Have reasonable expectations; it's just a plastic bag. The main negative is the crazy price. It would be interesting to have some independent data on whether the impermeability to odors is really any better than what you'd get with cheap ziplock bags from the supermarket.

Comment on this review

Mar

2010

(5 of 5 customers found this review helpful)

5.0

OP Saks Worth Their Weight in Gold

By cbdisco

from Denver, CO

About Me Avid Adventurer

See all my reviews

Pros

Easy to Use
Good Design
Lightweight
Odor Proof

Cons

Don´t Last Forever

Best Uses

Backcountry
Day Trips
River
Travel
Winter Camping

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

I´ve used OP Saks on thru-hikes of both the Continental Divide Trail (2,800 miles) and Pacific Crest Trail (2,650 miles) and have never had a bear, rodent or any other animal get my food or even try. These OP Saks work!

They don´t last forever, but they work. You can quadruple bag ziplocs but they will not be odor proof - OP Saks are truly odor proof.

If you overstuff them, they will break so don´t overstuff them. Carry 2 instead.

They also work well to wash trail-travel clothes in with a few drops of liquid soap. Just seal in the clothes, water, soap and shake!

Bottom line is that they do exactly what they say they are supposed to do - keep odors contained.

Comment on this review

Jan

2010

(1 of 2 customers found this review helpful)

1.0

Not worth it.

By dav

from los angeles, ca

About Me Casual/ Recreational

See all my reviews

Pros

Cons

Breakable

Best Uses

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

There are seams connecting the bag to the zipping mechanism. At this point the bag fails when a slight tug pulls the seam apart. Very fragile bag for the use.

Better off buying the ziplocs and double bag if necessary.

Comment on this review

Jan

2010

(6 of 6 customers found this review helpful)

4.0

Works good if used properly

By mountaingoat

from Atlanta, Ga.

About Me Avid Adventurer

See all my reviews

Pros

No escaping odors

Cons

Loose Lid

Best Uses

Backcountry Camping
Day Trips
Survival

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

I purchase this product as backup food storage protection from black bears & other critters. This product does work (No odor gets out of bag as they claim), but some precautions must be taken to prevent bag from opening. It does seal just like a sandwich or freezer bag. Its draw back that everyone keeps experiencing is that it has only one seal across the top instead of two. These bags are pretty large, so what I did is only fill two bags half-full with food, seal the single seal across the top as you press all the air out, and was still able to get six days worth of food in them for just me. The manufacturer gives you 3 bags in the package. Then I folded the bag in half and laid the bag flat and folded over against the half of the bag that had food in it. I then place the OP Sak inside of a storage bag. I did the second bag of food the same way and placed it inside the storage bag on top of the other OP Sak, and cinch the storage bag closed. The storage bag was small enough that the OP Sak's fit snug inside the storage sack on top of each other to prevent movement of the OP Saks' so that they could not accidently come open when compressed in my backpack. It worked like a champ. With that said, they will work if only filled half way up, and put inside of a cinch storage sack. Thats the only way I believe they will work trouble free, but they worked great with those precautions taken. The Saks would be a better, more trouble-free set-up if they had a double seal like a freezer bag, and If they had a closure tab such is like what is on the space-vacuum bags which I have used to keep my backpack contents dry and they worked fantastic stuffed and seal very easily. These OP Saks do however keep food odors from escaping if they are carefully & are somewhat skillfully kept closed; I've had no bears or critters discover my food yet using these bags. These bags could be an absolutely fantastic product with just a little better design on the drawing board. I hope the manufacturer takes note. It would be ashame to loose such a good product for the consumers just because the bags need a little tweeking to make them perfect.

Comment on this review

Jul

2009

(3 of 3 customers found this review helpful)

4.0

security of mind

By vmk

from Seward, AK

About Me Casual Adventurer

See all my reviews

Pros

Flexible
Good Capacity

Cons

Punctures easily
Tears easily

Best Uses

Backcountry Camping
Day Trips

Comments about LOKSAK OPSak Odor-Proof Barrier Bags - 20 x 12.5:

We live in Alaska and nearly all of our hikes are in bear country. I used one on the Resurrection trail on a 6 day hike to hold my snacks together and was pleased with it despite the expense. I was then convinced to use the other two for my boys (8 & 11 years) to carry their snacks for the Chilkoot trail during a 5 day hike. It helped keep their snacks and wrappers together with an added assurance that food scents were kept to a minimum. Since we do a lot of hiking in bear country I am concerned about them carrying food in their packs and attracting unwanted bear attention, but like for them to have some on hand in case they get lost or separated. The adults carry the rest of the food and garbage in our family.

I liked their flexibility and that they could fit easily into the pocket of our packs. I felt pretty secure about their effectiveness although the boys were rougher with the bags and the top of one tore, but it still could be sealed. I should have explained their use and expense beforehand, because they took better care of them after I did.

I didn't trust the effectiveness enough to allow the boys to carry the fragrant pepperoni, though. Nor am I sure how effective they are if small punctures are made with regular wear and tear. Be careful nothing sharp or angular is kept in the bags and you'll get more use out of them.