A good leather bag is an investment. and like any investment, how you treat it when you're not using it matters just as much as how you treat it on the trail. Cracking is the most common form of leather damage, and almost all of it is preventable. The culprit is usually poor storage: the wrong environment, no conditioning beforehand, or a bag stuffed into a closet corner and forgotten.
This guide covers exactly how to store leather bags so they hold their shape, retain their moisture, and keep looking better with age. not worse.
Why Leather Cracks in Storage
Leather is skin. It contains natural oils that keep it supple and flexible. When those oils dry out. whether from heat, low humidity, or prolonged inactivity. the fibers in the leather begin to stiffen and eventually fracture under stress. That's what cracking is: dried-out leather fiber that can no longer flex without breaking.
Storage conditions accelerate this process faster than regular use does. A bag that gets handled regularly gets exposed to ambient humidity and occasional conditioning. A bag sitting in a hot closet or a dry attic goes months without any of that. The result is predictable.
The fix is just as predictable. but you have to be intentional about it.
Step 1: Clean and Condition Before You Store
Never put a leather bag away dirty. Dust, oils from your hands, food particles, and trail grime all continue to work on the leather even when it's sitting still. Dirt is mildly abrasive. Body oils can break down the leather's finish over time.
Before storing any leather bag, wipe it down with a slightly damp cloth to remove surface grime. Then follow up with a quality conditioner to restore any moisture the leather lost during use.
Our Leather Balm #1 and Leather Balm #2 are both all-natural formulas built specifically for this purpose. they penetrate the leather to replenish oils without leaving a greasy residue or clogging the pores. If the bag is genuinely dirty rather than just dusty, start with Saddle Soap first, let it dry fully, then apply the balm. You can read more about when to use each in our article Saddle Soap vs. Leather Balm: Which One Does Your Gear Need?
Let the bag dry completely before moving to the next step. Storing leather that's still damp. even slightly. invites mold and mildew.
Step 2: Stuff the Bag to Hold Its Shape
Leather remembers. If you store a bag collapsed or crumpled, creases form and eventually become permanent. Worse, folded leather can crack at those stress points even if the rest of the bag is well-conditioned.
Stuff the bag before storing it. Use acid-free tissue paper, a clean cotton t-shirt, or a dedicated bag shaper. Avoid newspaper. the ink can transfer to light-colored leather interiors. The goal is to fill the bag enough that it holds its natural, open shape without being stretched tight.
For structured bags like the Centurion Leather Duffle Bag or the Bravo Backpack, this is especially important. Full-grain buffalo leather is tough, but even tough leather will develop memory creases if stored collapsed for extended periods.
Step 3: Choose the Right Storage Environment
Environment is everything. Here's what to avoid and what to aim for:
Avoid Heat and Direct Light
Heat dries out leather fast. Attics, garages, and the back seat of a car in summer are the worst places to store a leather bag. Direct sunlight does double damage. it heats the leather and fades the color. Keep your bags out of both.
Avoid Plastic Bags and Airtight Containers
This surprises a lot of people. Leather needs to breathe. Sealing it in a plastic bag or an airtight storage container traps moisture, which promotes mildew, and cuts off airflow, which accelerates drying of the leather's natural oils. Both outcomes are bad.
Aim for Moderate, Stable Humidity
The sweet spot for leather storage is a relative humidity between 45% and 55%. Most climate-controlled indoor spaces fall in this range. If you live somewhere very dry. like parts of West Texas in summer. a small humidifier in the closet can make a meaningful difference for long-term storage.
Use a Breathable Dust Bag
The best way to protect a leather bag from dust without cutting off airflow is a breathable cotton dust bag. Many quality leather goods come with one. If yours didn't, a clean pillowcase works fine. The point is fabric, not plastic.
Step 4: Store Upright, Not Hanging
Hanging a leather bag by its handles for extended periods puts constant stress on the handle attachments and can stretch or distort the bag's shape. Store bags upright on a shelf instead. stuffed and standing the way they'd sit when in use.
If shelf space is tight, lay a duffle flat rather than hanging it. For smaller pieces like the Skyhawk Leather Toiletry Bag, standing upright in a drawer or on a shelf works perfectly.
How Often Should You Condition Stored Leather?
If you're storing a bag for more than three months, pull it out and apply a light coat of conditioner at the midpoint. You don't need to do a full clean. just a thin layer of leather balm worked in with a cloth or your fingertips. Let it absorb, then put the bag back.
For bags stored in dry climates or during summer months, consider conditioning every six to eight weeks. It takes five minutes and adds years to the leather's life.
Our broader guide on How to Maintain Leather Gear for 20+ Years goes deeper on long-term care routines if you want the full picture.
A Note on Hair-On and Exotic Hides
Bags made from hair-on cowhide. like the Longhorn Hair-On Leather Duffle Bag. follow the same basic storage rules with one addition: avoid compression. Storing a hair-on piece under weight or pressed against other items can mat and flatten the hair permanently. Give these bags their own space on a shelf with room to breathe.
Quick Storage Checklist
- Clean the bag with a damp cloth or saddle soap before storing
- Condition the leather and let it dry completely
- Stuff the bag with acid-free tissue or soft cloth to hold its shape
- Place in a breathable cotton dust bag. not plastic
- Store in a cool, dry, climate-controlled space away from heat and light
- Store upright on a shelf, not hanging from handles
- Recondition every few months during extended storage
That's it. There's no complicated system here. just consistent habits that keep leather healthy between uses. Do these things and a quality leather bag will outlast decades of storage cycles without a single crack.
If you're looking for leather bags built to last that long in the first place, browse the full collection at Untundra. Every bag is made from premium full-grain and buffalo leather, built for hard use and a long life.