Bear-Resistant Food Storage on Trail: Ursack Major XL Guide

Quick answer

To use the Ursack Major XL, pack food in the included odor-barrier bag, seal the sack with a double knot, and tie it to a tree trunk at least 100 feet from your sleeping area. This bear-resistant food bag weighs 8.8 oz and holds about 50% more than the standard Major, making it a lighter alternative to a traditional bear canister. Always check local regulations first, as some areas still require a hard-sided canister.

Why the Ursack Major XL works as a bear canister alternative

The Ursack Major XL is a soft-sided bear-resistant food bag made in the USA. It uses a tighter weave than earlier versions to resist tearing, and it weighs 8.8 oz (250 g) — significantly less than a typical bear canister. It holds about 50% more food than the smaller Ursack Major, so it suits solo hikers on 5–7 day trips or pairs on shorter outings. Unlike a canister, it collapses when empty, so it takes up little pack space after you eat your food. However, it is not approved in every area; always verify with the land manager before relying on it.

Step 1: Pack food and scented items into the odor-barrier bag

Place all food, wrappers, and scented toiletries (like toothpaste or sunscreen) into the included odor-barrier bag. Squeeze out excess air and twist the top closed. This inner bag slows scent escape and keeps the Ursack clean. Do not overstuff; leave room to twist and fold the top. A common mistake is leaving scented items like lip balm or hand sanitizer in your pack — they attract bears just as much as food.

Step 2: Seal the Ursack with a double knot

After filling the odor-barrier bag, place it inside the Ursack Major XL. Pull the drawstring tight and tie a double knot (overhand knot followed by a second overhand). This knot is critical: bears can untie simple knots or open hook-and-loop closures. Check that the knot is snug against the sack's mouth. If you can slip a finger under the knot, it's too loose. A common mistake is using a quick-release knot or leaving the cord dangling, which gives a bear something to grab.

Step 3: Tie the Ursack to a sturdy tree trunk

Find a live tree with a trunk diameter of at least 6 inches. Tie the Ursack's cord around the trunk using a double knot or a secure hitch, positioning the sack so it hangs 3–4 feet off the ground and at least 3 feet from the trunk. This keeps the sack away from branches a bear could use for leverage. Avoid dead trees or branches that could break. A common mistake is tying to a thin sapling that a bear can bend or snap. If no suitable tree exists, place the sack on flat ground away from your tent and mark the spot.

Step 4: Set up camp at least 100 feet away

Choose a campsite at least 100 feet (30 meters) from your food storage tree. This distance reduces the chance a bear associates your sleeping area with food. Cook and eat at least 100 feet from your tent as well. Store all scented items in the Ursack, not in your pack or tent. A common mistake is keeping a snack or toothpaste in the tent 'just in case' — that defeats the purpose. If you're in grizzly country, consider carrying bear spray and know how to use it.

Step 5: Retrieve food in the morning and inspect the sack

In the morning, untie the Ursack and check for any punctures, tears, or chew marks. The tighter weave resists damage, but a determined bear may still leave marks. If you find holes larger than a pea, retire the sack. Wipe the interior with a damp cloth and let it dry before repacking. A common mistake is storing the Ursack dirty or damp, which can lead to mildew and weaken the fabric over time. Also, never store food in the Ursack inside your pack — the scent can linger and attract animals to your gear.

Step-by-step: Using the Ursack Major XL on trail

1. Pack food and scented items: Place all food, wrappers, and scented toiletries into the included odor-barrier bag. Twist the top closed and tuck it into the Ursack. Checkpoint: No scented items left in your pack or pockets.
2. Seal with a double knot: Pull the drawstring tight and tie a double overhand knot. Ensure the knot is snug against the sack's mouth. Checkpoint: Knot cannot be slipped open by a bear's claws.
3. Tie to a sturdy tree: Select a live tree with a trunk diameter of at least 6 inches. Tie the cord around the trunk so the sack hangs 3–4 feet off the ground and 3 feet from the trunk. Checkpoint: Sack is not touching the trunk or branches.
4. Set up camp 100 feet away: Position your tent at least 100 feet from the food storage tree. Cook and eat in a separate area, also 100 feet from your tent. Checkpoint: No food or scented items in or near your tent.
5. Retrieve and inspect: In the morning, untie the Ursack and inspect for punctures or tears. Clean and dry before repacking. Checkpoint: Retire the sack if holes are larger than a pea.

Product facts

• URSACK MAJOR XL - Bear Resistant Food Sack/Bag: 8.8 oz (250 g) bear-resistant food bag; holds about 50% more food than the standard Ursack Major; made in the USA; updated version features a tighter weave. The light weight and larger capacity make it a practical bear canister alternative for solo hikers or pairs who want to save pack space and reduce base weight.