Winter is coming to an end, which means it is time to put your heavy outerwear away until the weather turns cold again. If you have spent the season wearing a classic B-3 WWII shearling bomber jacket, you already know how well it handles freezing temperatures and biting winds. But before you toss it into the back of a closet, give it the care it needs.

Leaving a shearling jacket on a thin plastic hanger in a cramped closet for six months can damage the leather, flatten the wool, and trap moisture. Following a proper b3 bomber jacket maintenance checklist helps prevent these problems and keeps your coat in good shape for next winter.

Natural sheepskin needs a little attention before long-term storage, but the process is straightforward. Clean the jacket, condition the leather when appropriate, and store it somewhere cool and dry. Get these steps right, and a quality B-3 bomber can serve you for years.

Clean the Shearling and Outer Shell First

Never put your jacket away with months of winter dirt still on it. Road salt, body oils around the collar, and splashes from wet streets can settle into the leather and fleece. Leave those stains untreated through spring and summer, and they may become harder to remove.

Start with the outer leather shell. Use a slightly damp microfiber cloth to remove loose dust and surface dirt. Avoid soaking the leather, as excess moisture can damage the hide.

For salt stains, be careful with home remedies. A diluted white vinegar solution may help with some surface marks, but it can also affect the leather's colour or finish. Test any cleaning solution on a hidden area first, or check the manufacturer's care instructions before applying it.

The wool interior needs a gentle approach, too. If you are learning how to clean a shearling jacket, remember that natural fleece can trap loose hair, lint, and dust.

Take the jacket outside and shake it gently to loosen debris. Use a soft-bristled brush to lift dirt and separate flattened fleece. A wide-tooth comb can help with small tangles, but avoid pulling at the wool or using a stiff wire brush that could damage the fibres.

For small stains, use a cleaner specifically made for shearling or sheepskin. Follow the product instructions and avoid saturating the fleece. Let the jacket air-dry naturally in a well-ventilated room, away from radiators, fireplaces, and direct sunlight. Excessive heat can dry out the leather and cause it to stiffen or crack.

One important rule: Make sure the jacket is completely dry before storing it. Even a little trapped moisture can cause trouble over the summer.

Apply Leather Conditioner Before Storage

Cold weather, wind, and repeated exposure to dry air can affect the feel of natural leather. Before putting your B-3 away, check whether the hide needs conditioning.

Dry leather may feel stiff or look dull, particularly around the elbows, shoulders, and seams. Without suitable care, those areas can become more vulnerable to cracking over time.

When following leather jacket conditioning tips, the product matters as much as the technique. B-3 jackets often feature a specialised suede or nubuck exterior with a natural shearling lining. Standard conditioners designed for smooth leather may darken the surface, leave greasy patches, or alter its texture.

Choose a product specifically approved for your jacket's leather finish. Do not assume that lanolin-based or beeswax-based products are suitable for every shearling coat. Some formulas can leave a residue or change the appearance of suede.

If the manufacturer recommends conditioning, test the product on a hidden spot before treating the entire jacket.

How to Apply Conditioner Step by Step

1. Clean the surface first. Remove dust and dirt with a suitable soft brush or cloth. Never condition a dirty jacket because you may rub debris into the leather.

2. Test the product. Apply a small amount to an inconspicuous area and allow it to dry according to the instructions.

3. Apply sparingly. If the product is suitable for your jacket, use a clean cloth or sponge and follow the manufacturer's directions. Avoid rubbing aggressively or soaking the hide.

4. Check the seams and stress points. Pay attention to the elbows, shoulders, pocket edges, and other areas that experience regular movement.

5. Allow the jacket to dry naturally. Follow the product's recommended drying time and remove any excess residue as directed.

The finished leather should retain its natural feel without a sticky or greasy coating. If your jacket has a suede finish, a specialist suede protector or professional treatment may be more appropriate than a conventional leather conditioner.

How to Store a B3 Jacket Without Losing Its Shape

Once the jacket is clean and fully dry, storage becomes the next priority.

B-3 shearling bombers are substantial garments, often weighing several pounds because of their thick leather and wool construction. Leave one hanging on a narrow wire hanger for months, and the weight can distort the shoulders or stretch the garment.

If you are wondering how to store a B3 jacket properly, start with a sturdy, wide, contoured hanger. It should support the shoulders evenly without stretching the jacket or creating pressure points.

Next, skip plastic garment bags and standard dry-cleaning covers. Plastic can restrict airflow and trap moisture, particularly in humid environments. A breathable cotton garment bag is a better choice for keeping dust off the jacket while allowing air to circulate.

A clean cotton bedsheet can also work as a loose dust cover. Just make sure it does not compress the fleece or restrict ventilation.

Give the jacket enough room in the closet, too. Squeezing it between heavy coats can flatten the shearling and leave permanent creases in the leather.

Ideally, hang it in a cool, dry indoor space where the temperature and humidity remain reasonably stable.

Prevent Mold on Leather Jackets During Hot Months

Humidity is one of the biggest risks when storing natural leather and sheepskin. A damp basement, humid garage, or poorly ventilated attic can expose your jacket to conditions that encourage mould growth.

The warning signs include musty smells, unusual spots on the leather, and visible growth on the surface or lining. By the time these appear, simply airing out the jacket may not be enough.

Preventing mould on leather jackets starts with choosing the right storage environment. Keep your B-3 in an indoor closet away from direct sunlight, damp walls, and areas prone to temperature swings.

Aim for a cool, dry space with good airflow. If your home is humid during summer, a room dehumidifier can help maintain more suitable conditions. Silica gel packets may also help manage moisture in an enclosed storage area, but they are not a substitute for controlling room humidity.

Avoid storing the jacket in a sealed container or an airtight plastic bag.

Moths are another concern, particularly when natural wool remains undisturbed for months. Keep the closet clean and inspect the garment occasionally. Cedar blocks placed nearby may help deter some insects, although they are not a guaranteed solution. Avoid placing strongly scented products directly against the leather or fleece.

If you notice mould, do not scrub it aggressively or apply household chemicals. A leather and shearling specialist can assess the damage and recommend appropriate cleaning.

Why Your B3 Bomber Jacket Maintenance Checklist Matters

A quality B-3 shearling jacket is built to handle cold weather, but that does not mean it can withstand careless storage. The leather, wool, and stitching all benefit from the right care between seasons.

Set aside around 20 to 30 minutes at the end of winter to inspect the jacket, remove surface dirt, check for stains, and prepare it for storage. Allow additional time for drying or conditioning when needed.

The goal is simple: keep the leather in suitable condition, protect the fleece from flattening, and prevent moisture from damaging the garment while it sits unused.

Whether you wear vintage military outerwear or a modern flight jacket, these habits can help extend its useful life. When the first cold snap arrives next autumn, your coat should be ready to wear instead of needing an expensive repair.

If you enjoy classic military outerwear and vintage flight styles, explore our full collection of bomber jacket guides for more advice on styling, jacket history, and leather care.

Frequently Asked Questions

Can I dry clean my B-3 shearling jacket?

Avoid taking your jacket to a standard dry cleaner unless they have experience with shearling. Conventional cleaning methods may damage the hide, alter the leather's finish, or affect the wool lining. Look for a professional leather and shearling specialist who understands how to clean both materials safely.

What should I do if my B-3 jacket gets soaked in rain or snow?

Gently shake off excess water and hang the jacket on a wide, sturdy hanger in a well-ventilated room. Let it dry naturally at room temperature, away from radiators, heaters, and hairdryers. Do not wring the garment or rub the wet leather.

Once it is completely dry, inspect the leather for changes in texture or stiffness. Use a suitable leather care product only if the manufacturer recommends it for your jacket's finish.

How often should I condition my B-3 bomber jacket?

There is no fixed schedule that works for every B-3 jacket. Some hides need occasional conditioning, while suede and nubuck finishes may require different care altogether. Check the manufacturer's instructions and condition the leather only when needed with a compatible product. Applying conditioner every year without checking the leather can cause buildup or change its appearance.

Is it safe to fold a shearling coat for summer storage?

Hanging your B-3 jacket is generally the better option because folding a heavy shearling coat can create deep creases and put pressure on the leather. Use a wide, sturdy, contoured hanger and cover the jacket with breathable cotton fabric. If you must fold it temporarily, avoid sharp creases and do not place heavy items on top of it.