backpacking-food-storage-bags

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Backpacking food storage can be a real headache. You need something lightweight, durable, and, most importantly, effective at keeping critters away from your precious calories. Two of the most popular options are Opsak and Loksak odor-proof bags, but how do they stack up against each other and against other odor-resistant options? We’ve put several bags through the wringer on multiple trips to help you decide which is best for your next adventure.

Opsak vs. Loksak: A Head-to-Head Comparison

Both Opsak and Loksak bags are designed to minimize food odors, but they achieve this in different ways and with varying degrees of success.

Odor Resistance

This is the primary function of any food storage bag. Both claim to be odor-proof, but real-world performance tells a different story.

• Opsak: Opsaks are made from a multi-layer plastic film that is designed to block odors. In our testing, they performed reasonably well with milder smelling foods like dried fruit and granola. However, stronger odors, such as bacon or tuna, were noticeable even through the bag. After a week-long trip, we noticed squirrels were very interested in the vicinity of our food bag, even though the Opsak was inside.

• Loksak Opsak: These bags use a similar multi-layer film technology. In our tests, the Loksak performed noticeably worse than the Opsak, with powerful-smelling foods like salami and cheese easily detectable. We suspect the thinner material contributes to this reduced effectiveness.

Verdict: While neither bag is truly “odor-proof,” the Opsak offers a slightly better level of odor resistance compared to the Loksak. If you’re carrying pungent foods, neither is a slam-dunk solution.

Durability

Backpacking gear needs to withstand rough handling. A ripped food bag is a recipe for disaster (and potentially attracting unwanted guests).

• Opsak: Opsaks are surprisingly durable. The material is thicker than a standard zip-top bag and can withstand significant abrasion. We’ve stuffed these into overloaded backpacks and dragged them across rocky terrain with minimal damage.

• Loksak Opsak: Loksaks are noticeably thinner and more prone to tearing. We experienced punctures from sharp corners of food packaging within the bag on several occasions. For longer trips, we recommend double-bagging with Loksaks or opting for a more robust solution.

Verdict: Opsaks win hands down in terms of durability. Their thicker construction makes them a more reliable option for extended trips and demanding conditions.

Ease of Use

A fiddly closure can be frustrating, especially with cold or gloved hands.

• Opsak: Opsaks use a simple zip-top closure. It’s easy to open and close, even with gloves. The wide opening also makes it easy to load and unload food.

• Loksak Opsak: Loksaks also use a zip-top closure, but it can be more difficult to align and seal properly, especially with a partially full bag. The thinner material can also make the closure feel flimsy.

Verdict: Opsaks offer a slightly easier and more reliable closure system.

Beyond Opsak and Loksak: Exploring Other Options

While Opsak and Loksak are popular, other food storage solutions exist.

Heavy-Duty Zip-Top Bags

Good old-fashioned freezer bags can be surprisingly effective, especially when used in conjunction with other strategies.

• Pros: Inexpensive, readily available, and lightweight.
• Cons: Not odor-proof, prone to tearing, and environmentally unfriendly if disposed of improperly.

Best Use: For short trips with minimal odor concerns, or as an inner layer within a more robust odor-resistant bag. A double-bagged freezer bag can offer good protection against spills.

Bear-Resistant Canisters

For areas where bears are a significant concern, a bear canister is often required by law.

• Pros: Virtually indestructible, completely odor-proof, and mandatory in some areas.
• Cons: Heavy, bulky, and expensive.

Best Use: Required in bear country. Period. If you’re unsure about regulations, check with the local land management agency. See our article on Bear Canister vs. Bear Hang: When Each Food Storage Method Makes Sense.

Smell-Proof Mylar Bags

Mylar bags, often used for long-term food storage, offer excellent odor resistance.

• Pros: Excellent odor barrier, durable, and reusable if carefully opened.
• Cons: Can be bulky, require heat-sealing (unless using zip-top varieties), and may be overkill for shorter trips.

Best Use: For repacking dried meals or storing particularly pungent items.

Choosing the Right Bag for Your Trip

The best food storage bag depends on several factors:

• Trip Length: For shorter trips (1-3 days) with less pungent food, Opsaks might suffice. Longer trips demand more robust solutions.
• Food Type: Strong-smelling foods require more aggressive odor control.
• Wildlife Concerns: Are you in bear country? Are rodents a problem?
• Weight and Bulk: Every ounce counts when backpacking.
• Budget: Food storage bags range from inexpensive freezer bags to pricey bear canisters.

Recommendation Scenarios

• Weekend Trip in Mild Terrain: Opsak for main food storage, freezer bags for individual snacks.
• Week-Long Trip in Bear Country (Canister Required): Use Opsaks inside the canister to contain spills and keep the canister cleaner.
• Long-Distance Thru-Hike: Opsaks for everyday food, Mylar bags for repacking meals.
• Budget-Conscious Hiker: Heavy-duty freezer bags, meticulously packed and hung properly (where allowed).

Best Practices for Food Storage

No matter which bag you choose, following these best practices is crucial:

1. Keep a Clean Camp: Wipe up spills immediately and dispose of food scraps properly.
2. Hang Your Food (Where Allowed): A proper bear hang can significantly reduce the risk of attracting animals.
3. Store Food Away From Your Sleeping Area: At least 200 feet is recommended.
4. Double-Bag Fragrant Items: Extra protection for potent smells.
5. Consider Scent-Proof Containers: For items like toothpaste and sunscreen, which can also attract animals.
6. Practice Leave No Trace: Pack out all trash, including food scraps and packaging. See our article on Leave No Trace Camp Kitchen Hygiene: Food Storage Without Attracting Wildlife.

Ultimately, effective food storage is about more than just the bag you choose. It’s about a combination of the right gear and responsible camping practices.