Monday, March 23, 2026

Ursack Main Evaluate | CleverHiker


Backside Line

The Ursack Main is likely one of the lightest and most handy bear-resistant meals storage choices obtainable. Not like cumbersome canisters, it packs down small and simply suits inside a backpack, making it very best for ultralight hikers who prioritize minimal pack weight. Its sturdy material and high-tensile energy twine forestall most bears and different critters from escaping along with your meals, although it doesn’t all the time maintain contents intact. Persistent bears can crush or mash what’s inside and even tear it open every so often.

Though it’s IGBC-certified for grizzlies, it’s not universally authorised in each park or wilderness space.

We’ve used the Ursack in rugged, high-traffic bear zones like Colorado’s Maroon Bells-Snowmass Wilderness, the place it supplied each comfort and peace of thoughts. For ultralight backpackers and skilled hikers who prioritize simplicity and weight financial savings, it’s a wonderful alternative. For extra heavy-duty bear canisters, see our information to the very best bear canisters.

How We Examined

We examined the Ursack for quite a few nights throughout a number of backpacking journeys within the Maroon Bells-Snowmass Wilderness, Indian Peaks, and different areas.

The testing included verifying producer specs, evaluating its precise packing capability, and evaluating many person reviews with our personal first-hand experiences within the backcountry.

Fast Specs

Ursack Main

Greatest Bear Bag


CleverHiker Ranking:

4.5/5.0


Worth:

$120


Measured Weight:

7.6 oz.


Quantity (Liters):

10.6


Certifications:

IGBC, SIBBG, Not authorised for all Nationwide Parks

Professionals

  • Light-weight
  • Packable
  • Straightforward to make use of
  • Gentle exterior takes up much less area
  • Reasonably priced

Cons

  • Not 100% efficient
  • Not crushproof
  • Not universally accepted

a hiker laughs as he swings around an ursack
The Ursack feels virtually weightless in comparison with hard-sided canisters. – Picture Credit score: Brett Kretzer (CleverHiker.com)

Weight & Packability

The Ursack is a good way to shed weight whereas nonetheless conserving your meals secure from bears. The Ursack Main weighs simply 6.3 ounces and measures 12.5 inches by 18 inches when absolutely packed.

That’s simply two kilos lighter than a number of the lightest hard-sided bear canisters in the marketplace. Because it’s a smooth, collapsible bag, the Ursack can also be a lot simpler to pack than a bear canister. It solely takes up as a lot area as your present meals provide.

a hiker walks away from the camera with a black drawstring bag slung over his shoulder
The Ursack is a lighter, extra packable, and far more manageable different to a heavy bear canister. – Picture Credit score: Brett Kretzer (CleverHiker.com)

Ease of Use

The Ursack is easy to make use of with out sophisticated or irritating locking techniques. The Ursack is designed to be a powerful barrier towards bears, not a puzzle to trick them. 

Conserving critters out nonetheless requires a course of to be efficient. First, guarantee the 2 twine strands are crossing, then pull the drawstring shut and safe it with a double overhand knot. Bears aren’t the one animals after your meals, so it’s essential to have a good enclosure to stop small rodents from climbing in.

As soon as tied, you’ll have to safe the Ursack to a tree. A easy overhand knot across the trunk will suffice, however Ursack recommends utilizing a quick-release knot like a slip knot so you’ll be able to simply untie it after it has been pulled on by a bear all night time. If potential, wrap it round a department a number of toes as much as make it more durable for a bear to get leverage.

Discovering the precise tree can generally be difficult, particularly if the trunks are cluttered or branches are out of attain, however in most bear nation, anchor is normally not distant.

A small however useful bonus: the reflective twine and tag make it straightforward to seek out your bag with a headlamp after darkish, so that you don’t waste time wandering across the woods in search of your meals.

a hiker cinches an ursack closed
Oops! For a tighter cinch, cross the strands first! – Picture Credit score: Brett Kretzer (CleverHiker.com)

Safety

The Ursack’s safety primarily relies on two elements: how properly you utilize it and the way motivated the native bears are. In case you ensure to tie good knots, it’s unlikely that any woodland creature will make off along with your complete meals bag.

The IGBC has licensed the Ursack as efficient towards grizzlies, although it’s essential to notice that their checks contain well-fed captive bears, not the hungry, pre-hibernation black bears you may encounter within the wild. These intelligent scavengers are notoriously persistent.

In follow, the Ursack normally holds its personal towards most bears, nevertheless it’s not indestructible. There are a number of reviews of persistent bears and different critters gnawing a gap within the UHMWP bag. Even when a bear can’t tear it open, it could actually nonetheless crush, squeeze, and pulverize your meals into an unrecognizable mess. You’ll nonetheless have your rations within the morning—however perhaps not in edible type.

For finest outcomes, we extremely suggest pairing it with an odor-proof liner like a Smellyproof or Opsack. This mix considerably reduces scent and temptation, conserving your meals safer—and hopefully much less smushed.

a hiker stuffs a plastic bag full of food into a black drawstring bag
The Smellyproof Bag-Ursack combo generally is a very efficient combo. – Picture Credit score: Brett Kretzer (CleverHiker.com)

Allow CompatibiLity

The Ursack carries the essential IGBC certification for grizzly bear resistance—the important thing requirement to be used in most regulated bear nation. Nevertheless, it doesn’t have a separate certification for black bears, which are sometimes extra persistent and dexterous on the subject of meals raids.

Even with the IGBC’s stamp of approval, the Ursack isn’t accepted in every single place. Some nationwide parks and wilderness areas nonetheless require a conventional hard-sided bear canister, so it’s essential to double-check native laws earlier than relying solely on the Ursack.

To make that simpler, Ursack prints a QR code inside every bag that hyperlinks to an up to date map exhibiting the place its use is authorised, restricted, or prohibited. It’s a helpful characteristic that helps forestall surprises once you attain the trailhead.

a hiker ties an ursack around a tree trunk
Fancy knot not required! – Picture Credit score: Brett Kretzer (CleverHiker.com)

Capability

The Ursack is available in a number of sizes to accommodate completely different journey lengths and group sizes, together with the ten.6-liter Main, 15-liter Main XL, and the big 30-liter Main 2XL, which might maintain roughly two weeks’ price of meals for one individual. 

The Main is the preferred alternative, providing sufficient capability for about 5 days of backpacking meals whereas conserving bulk and weight low. It’s giant sufficient to suit a SmellyProof Bag crammed with 14 Good To-Go meals, or as much as round 27 meals if you happen to skip the odor barrier liner. This measurement is flexible sufficient for many backpackers on journeys per week or shorter.

The bigger XL and 2XL variations are perfect for longer journeys or small teams. No matter measurement, every Ursack compresses simply when empty and weighs solely a small fraction of what a bear canister does.

a close up of an Ursack slung over a hiker's shoulder
The Ursack is each versatile and sturdy. – Picture Credit score: Brett Kretzer (CleverHiker.com)

Ought to You Purchase the Ursack Main?

The Ursack Main is right for backpackers and thru-hikers who prioritize low weight, flexibility, and packability over most safety. It’s appropriate for these touring via bear nation the place Ursacks are permitted and who’re assured of their meals storage strategies—corresponding to tying safe knots, utilizing odor-proof liners, and choosing good tie-off spots.

For light-weight adventurers, it supplies an important stability of comfort and peace of thoughts, avoiding the majority and awkwardness of a tough canister. 

Nevertheless, it’s not the only option for areas that strictly require canisters or for these searching for a totally foolproof barrier towards sturdy bears. The Ursack is barely bigger than a typical bear canister, but when used appropriately, it gives plenty of usefulness for a fraction of the burden. For these keen to commerce some energy for a lighter, extra packable setup, it’s top-of-the-line bear canister alternate options obtainable.

a close up of a hiker's hands balling up a black bag with an ursack tag
The versatile bag packs down a lot simpler than a hard-sided bear canister. – Picture Credit score: Brett Kretzer (CleverHiker.com)

What Different Bear Canisters and Backpacking Meals Storage Ought to You Take into account?

Our full information to meals storage choices covers all the things from security-enhancing equipment to tank-like bears canisters.

Smellyproof Luggage Evaluate: Smellyproof Luggage (or related odor barrier) are important for any non foolproof meals storage technique. At simply half an oz., they supply added safety and peace of thoughts in bear nation. They could possibly be the distinction that saves your meals and the bear’s life.

Adotec Ultralight Bear Locker: This ultralight bear canister different is one other soft-sided storage technique. Just like the Ursack, the Bear Locker advantages from the added safety of Smellyproof Luggage and simple packability.

Grubcan Carbon 6.6 Evaluate: For hard-sided canisters, the Grubcan Carbon is the closest in weight to the Ursack. It features like different hard-sided containers however weighs lower than two kilos. Nevertheless, these weight financial savings for the safety of a hard-sided container come at a really excessive worth.

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