If you are shopping for a B3 bomber jacket, you will sooner or later run into its lesser-known sibling, the B-6. Both are sheepskin flight jackets with the wool worn on the inside, both date from the 1930s, and from a distance they look alike. Up close they are built for different jobs.
The B-3 is the heavy one, made for the coldest conditions. The B-6 was designed as a lighter, trimmer jacket for crews who needed more freedom to move. Which one you should buy comes down to how cold your winters get, how much bulk you will put up with, and what you can actually find for sale. This guide covers all three.
The Quick Answer
- Buy a B-3 if you want maximum warmth, a big wrap-around collar and the classic heavy sheepskin look.
- Look for a B-6 style if you find the B-3 too bulky, drive a lot, or live where winters are cold but not brutal.
- Availability matters: the B-3 is widely made in many colors and cuts. The B-6 is a niche pattern, and we do not currently list a jacket under the B-6 name.
- Price: the B-3 jackets featured below start from $199.99, with free worldwide shipping.
B3 vs B6 Bomber Jacket: Side-by-Side
| Factor | B-3 | B-6 |
|---|---|---|
| Introduced | Mid-1930s | Late 1930s |
| Original purpose | Open and unheated aircraft at high altitude | Enclosed cockpits and less extreme cold |
| Shearling | Thick, deep pile | Thinner, shorter pile |
| Cut | Full and roomy | Trimmer through body and sleeves |
| Collar | Wide, usually two throat straps | Smaller, usually one throat strap |
| Warmth | Highest | High, but a step below |
| Bulk and weight | Heavy | Moderate |
| Availability today | Very common | Limited, often made to order |
Modern makers interpret both patterns freely, so treat the table as a guide to the original designs and check the details of any individual jacket before you buy.
Warmth: How Much Do You Really Need?
The B-3 was made for crews flying in aircraft with little or no heating, and the thick shearling reflects that. In a modern B-3 style jacket, a deep wool pile traps a lot of air against the body, and the big collar closes off the neck where most jackets leak heat. For standing around in freezing wind, it is hard to beat.
The B-6 came a few years later, when cockpits were becoming enclosed and crews did not always need that much insulation. Its thinner pile still gives you the natural warmth of sheepskin, just less of it. For a typical American winter spent moving between a heated car, an office and the sidewalk, that is often the more comfortable level. A B-3 worn indoors or on a mild day gets hot quickly.
A rough rule: if your winter days are regularly below freezing, the B-3 makes sense. If they sit mostly between 30 and 50°F, a lighter B-6 style, or a B-3 with a shorter pile, will see more wear. You can compare weights across our shearling leather jacket collection.
Fit and Movement
This is where the two differ most in daily use. A B-3 is cut full, with wide sleeves and a boxy body, because the thick shearling fills the space inside. It looks substantial, and it is. Reaching for a steering wheel or an overhead bin, you will notice it.
The B-6 was drawn narrower, with slimmer sleeves and a closer body, specifically so the wearer could move more easily. On a slim or shorter man, that trimmer line is usually more flattering. On a broad frame, the B-3's fuller cut can look better balanced.
Whichever you choose, size from measurements rather than your usual letter size. Shearling does not stretch much, and a jacket that is tight across the back will stay tight. Measure a coat you already own that fits well over a sweater, and compare it with the size chart on the product page.
Collar, Pockets and Details
The B-3's signature is its oversized collar with buckled leather straps, traditionally two of them, which let you stand the collar up and cinch it shut. The B-6 has a smaller collar, normally with a single strap. If you love the dramatic turned-up collar, that alone may settle the question in favor of the B-3.
Pockets vary by maker on both patterns. Original B-3s were sparse, while most modern versions add two hand pockets, which you will want. The B-6 was designed with angled hand pockets from the start. Hoods are a modern addition and appear on B-3 style jackets far more often.
Availability and Price
This is the practical point many comparisons skip. The B-3 is one of the most reproduced flight jackets in the world, so you can choose between brown, black and other colors, hooded and unhooded, sheepskin and suede finishes, at a wide range of prices. The B-6 has a much smaller following, so ready-made options are thin.
We do not currently stock a jacket sold as a B-6. If that slimmer pattern is what you want, the realistic routes are a trimmer-cut B-3, a lighter jacket from our men's aviator leather jackets, or a made-to-measure order. Our custom leather jackets service includes a free quote and mockup and one free alteration, with sheepskin among the leathers offered.
Which Should You Buy?
- You live with long, hard winters: buy the B-3. Nothing else in this comparison is as warm.
- You want the classic look: buy the B-3. The big strapped collar is what most people picture when they think of a sheepskin flight jacket.
- You drive daily or dislike bulk: a B-6 style or a slimmer B-3 will be more comfortable behind the wheel.
- You have a slim build: the trimmer B-6 line tends to sit better, or size a B-3 carefully so it does not swamp you.
- You want to buy today, with a choice of colors: the B-3, simply because there is far more to choose from.
For most buyers, that adds up to a B-3. It is warmer, easier to find and available in more variations.
B-3 Jackets Worth a Look
Brown Classic B-3 Sheepskin Leather Bomber Jacket
The traditional choice: a brown suede finish, shearling lining, an adjustable belted collar, shearling cuffs, a YKK zipper and two side plus two inner pockets. It suits anyone who wants the familiar B-3 look without extras. From $249.99.
View the Brown Classic B-3 Sheepskin Leather Bomber Jacket
B-3 Hooded Sheepskin Bomber Leather Jacket
A rich brown sheepskin shell with a shearling lining and a shearling-lined hood. Pick this one if wind and snow are regular parts of your winter and you would rather not carry a hat. From $229.99.
View the B-3 Hooded Sheepskin Bomber Leather Jacket
Black Sheepskin B3 Aviator Bomber Jacket for Men
The same pattern in black sheepskin leather. Black reads a little more modern and works well with dark jeans and boots, which makes it a good option for city wear. From $220.
View the Black Sheepskin B3 Aviator Bomber Jacket
B3 Aviator Bomber Men Leather Jacket
The lowest-priced of the four: a classic brown leather shell with a shearling lining in the standard aviator cut. A sound starting point if this is your first shearling jacket. From $199.99.
View the B3 Aviator Bomber Men Leather Jacket
For longer cuts, see our shearling coats, and for unlined flight patterns such as the A-2 and G-1, browse the flight jacket collection.
Frequently Asked Questions
Is a B-6 warmer than a B-3?
No. The B-3 has the thicker shearling and the larger collar, so it is the warmer jacket. The B-6 trades some of that warmth for a slimmer cut and easier movement.
Is a B-3 bomber jacket too warm for everyday wear?
In a mild climate, often yes. A B-3 is most comfortable around freezing and below. Above about 50°F, most people find it too hot for anything more than a short walk.
How should a B-3 jacket fit?
Roomy but not loose. You should be able to wear a sweater underneath and still move your arms freely, with the hem sitting at the hip and the sleeves reaching the wrist. If the shoulders droop past your own, go down a size.
Are B-3 jackets made from real sheepskin?
Traditional ones are, with the wool left on the hide to form the lining. Modern versions vary, and some use a separate or synthetic lining. Read the material lines on the product page, and see our sheepskin leather jackets if a real sheepskin shell is a priority.
Can I get a B-6 style jacket made to order?
You can request one through our custom service. Send reference photos and your measurements, and you will receive a free quote and mockup before anything is made.
The Bottom Line
The B-6 is the lighter, slimmer jacket and a fine choice if you can find one that fits. The B-3 is warmer, more recognizable and far easier to buy, which is why it remains the default sheepskin flight jacket. Orders ship free worldwide by DHL, FedEx or TNT, with any import duties paid by the customer. Compare colors, cuts and prices across the full B3 bomber jacket collection.
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