Ursack AllMitey Review

Overview

The Ursack AllMitey is a bear-proof and critter-proof food storage bag for camping and backpacking. It differs from Ursack’s other bags — the Major, Major XL, and Minor — which are either bear-proof or critter-proof, but not both.

It sits at the top of Ursack’s lineup and is the most practical soft-sided canister alternative for backpackers who face both large predators and persistent small critters on the same trip.

Key Specs

Spec	Value
Weight	269 g (9.5 oz)
Capacity	10.65 L (~5 days of food for 1 person)
Material	Laminated UHMWP and Kevlar
Cord	6 ft high-tensile-strength with reflective tracer
Certification	IGBC Certified Bear-Resistant
Water Resistant	Yes (seam sealing recommended)
Made In	USA
Comparison	See how Ursack AllMitey compares to similar gear

Performance

Material & Construction

The AllMitey is made with Spectra (UHMWP) for bear resistance and Kevlar for critter resistance. Spectra is strong enough to resist bears’ pulling and clawing action, while Kevlar rebuffs small animals with sharper teeth.

If you examine the AllMitey closely, it’s basically an Ursack Major on the outside with an Ursack Minor sewn inside, providing multiple layers of protection.

It’s made with a patent-pending laminated process that combines the UHMWP used in the Major and Major XL and Kevlar correctional fabric — the kind used in prisons to thwart shivs.

That’s not marketing copy; the material genuinely feels bombproof in hand.

One note on weight: there’s some confusion in the wild. The manufacturer lists 9.5 oz on the product page, but at least one user weighed their sample at 10.3 oz, and the box reportedly says 13 oz. The provided spec of 269 g (9.5 oz) aligns with the official figure, but don’t be surprised if yours lands a few grams heavier.

Bear & Critter Protection

Like all Ursack bear bags, the AllMitey is IGBC Certified Bear-Resistant — the industry gold standard. When sealed correctly, the bag will reliably stand between grizzly paws and your food.

The distinction between the AllMitey and the Major matters more than casual buyers realize. Small critters like mice and squirrels can weasel their way into many bear bags — even IGBC-certified ones — through tiny punctures or tears in the fabric weave. The AllMitey closes that gap. There are, however, a handful of failure reports in user reviews worth knowing about. There are reports of bears that chewed aggressively on the sack and, while unable to open it, crushed and slimed the food inside. This is the AllMitey’s fundamental limitation: it’s not crush-proof. Bears can still smash your snacks into inedible mush, and you can add a thin aluminum liner to ensure your food stays intact in a worst-case scenario. If you’re storing freeze-dried meals in stiff packaging, this is less of a concern; if you’ve got soft foods or fresh produce, plan accordingly. Also: a few users report bag failures that likely come down to improper hanging height or knot tying rather than material failure — user error is the most common culprit with any bear bag system.

Ease of Use

The AllMitey takes the hassle out of hanging a bear bag at night. It’s much lighter than a bear canister, and there’s no need to hang it high up in a tree, because the bag is impenetrable by bears and critters.

The knot-and-tie closure is dead simple once practiced: a double overhand knot cinched tight is all bears encounter.

The only significant issue some users encounter is cord length. In forests of old, thick trees it can be hard to find a trunk small enough or a branch sturdy and low enough to easily secure the bag, leaving you without full confidence in placement. It’s worth keeping this in mind when selecting a campsite.

Both the exterior tag and cord incorporate reflective elements, making it easier to find your AllMitey with a headlamp at night. The bag’s dimensions are also designed for seamless compatibility with Opsak smell-proof bags.

That’s a small but genuinely useful design touch. Ursack recommends pairing the AllMitey with an Opsak — it’s the right call, since the bag itself is not odor-proof.

Moisture

This is the AllMitey’s most underreported quirk. The ballistic fabric absorbs moisture — not just direct rain through the drawstring top, but any dampness or high humidity the exterior encounters. That moisture can then seep back out during the day while the AllMitey is in your pack, soaking adjacent gear. Ursack describes the bag as water resistant but recommends treating the seams with seam sealant, or they may leak. Throw a seam-sealing session into your pre-trip prep, and use an Opsak inside for an added moisture barrier around your food.

Velcro Removal

One recent design change has stirred genuine frustration among buyers. The black AllMitey series bags no longer have a Velcro enclosure. This leaves a small gap that is more likely for mice to exploit. It’s an odd move for a bag whose whole value proposition is critter-proofing, and Ursack hasn’t communicated the change clearly. If you’re buying based on older reviews or product photos showing velcro, be aware the current version differs.

Regulatory Limits

The AllMitey is not universally approved for use in some national and state parks despite being IGBC-approved. Check before you assume you can use one.

In short: it won’t pass muster in Yosemite or the SEKI zone, where hard-sided canisters are mandatory.

In some national and state parks, bear bags are only approved for use if accompanied by an aluminum liner.

Pros & Cons

Pros

• Dual bear + critter protection in a single soft-sided bag — a genuinely unique capability
• IGBC Certified Bear-Resistant — the most credible third-party standard available

• Eliminates the stress of a perfect bear hang every night, and is still 2+ pounds lighter than equivalently sized canisters.

• Packs down and shrinks as you eat through your food — canisters can’t do that
• Reflective cord and tag aid nighttime camp chores
• Made in the USA with a limited lifetime warranty against animal-caused breaches larger than ¼ inch
• No need to achieve a “perfect” high hang every night

Cons

• Not crush-proof — determined bears can mash food inside even if they can’t extract it

• Not waterproof or leak-proof; the outside of the bag absorbs rain.

  Seam sealing is a necessary pre-trip step
• The removal of the Velcro inner closure raises legitimate questions about critter-sealing effectiveness
• 6 ft cord can be limiting in forests with large, thick trees

• Not universally approved in parks that mandate hard-sided canisters

• Weight discrepancies across sources; real-world weight may vary slightly from the listed spec
• Premium price point relative to the Ursack Major or a basic bear hang kit

Who Should Buy This

The AllMitey is the right call for backpackers who regularly travel in mixed-threat terrain — think the Wind Rivers, Cascades, Canadian Rockies, or anywhere pine martens are as much of a concern as black bears. For any trip into bear country where hard-sided canisters are not mandatory, the AllMitey is arguably the most well-rounded and reliable option out there. It’s also a strong choice for anyone who’s tired of the nightly theater of trying to execute a proper PCT hang in low-branch forest. What it’s not: a legal replacement for a hard canister in Yosemite or SEKI, a crush-proof canister alternative, or a budget pick.

Verdict

The AllMitey earns its place on the market by doing something no other product does cleanly: one bag, one closure, protection from bears and critters alike, at a fraction of a hard canister’s weight. The fabric genuinely does what Ursack claims — the IGBC certification isn’t marketing fluff. The real-world caveats are the moisture absorption, the elimination of the Velcro inner closure, the cord-length limitation in dense timber, and the fact that it will never be a true canister substitute in the most regulated wilderness zones. If your trips take you somewhere a canister isn’t legally required but wildlife pressure is real, this is the most honest and convenient food protection system available in soft-sided form. Rating: 7.5/10.