Do Leather Jackets Stretch? What Gives, What Doesn't, and Whether to Size Up

Leather gives a little. Not where most people hope, and never as much as they hope.

Do leather jackets stretch?

A little, and only in some places. Lambskin softens with wear and gives slightly across the chest and back as it shapes to you, but the shoulder seams, the sleeve length and the body length stay exactly where they were on the day you bought it.

So the useful question isn't whether a jacket will stretch. It's which parts of the fit are fixed and which parts wear will settle. Know the difference and you can choose the right size the first time.

What changes as you wear a leather jacket?

Leather is a skin, not a woven fabric. Its fibers form a dense, interlaced network, and with warmth, movement and time that network relaxes. On a lambskin jacket you will notice three things over the first weeks of regular wear.

• It softens. A jacket that felt slightly firm off the hanger starts to drape and move with you. This is the biggest change, and it is a change in feel more than in size.
• It gives a little across the chest and back. Where the leather is under gentle, repeated tension (reaching, driving, crossing your arms), it relaxes and molds to you. A jacket that is close across the chest becomes comfortable. A jacket that won't close across the chest does not become one that will.
• It creases where you bend. The elbows and the inside of the arms take on your movement. That is character, not wear and tear.

How much is "a little"? Honestly, nobody can give you a reliable number. Estimates online run from about half an inch to 10–15 percent, and none of them come from measurement. It depends on the skin, the cut, the lining and how often you wear it. Plan on gaining comfort, not size.

What never changes?

This is the part that matters most, and the part most often left out.

• Where the shoulder seam sits. The seam sits where the pattern put it. If it falls past your shoulder bone, or pinches inside it, it will do the same in a year. Wear won't move it, and it is the hardest part of a jacket to alter.
• Sleeve length. Leather gives in width, not in length. A sleeve that stops short of your wrist bone stays short.
• Body length. The hem stays where it is. If it rides well above your waistband when you raise your arms, it always will.
• The lining. Most leather jackets are lined, and woven lining fabric doesn't give the way leather does. A lined jacket loosens less than the leather alone would suggest.

How should a leather jacket fit when you try it on?

Be strict about the parts that are fixed and more forgiving about the parts that soften. Try the jacket on over what you will actually wear under it, then work through this list in order.

1. Start with the shoulders. The seam should sit at the edge of your shoulder bone, not past it and not inside it. Get this right before anything else, because nothing fixes it later.
2. Reach forward. Stretch both arms out in front of you, as if to a steering wheel. You should feel the back draw closer, not bind. If the seams pull hard across your shoulder blades, the jacket is too small.
3. Check the sleeves twice. With your arms at your sides, the cuff should reach your wrist bone. With your arms bent, it shouldn't ride far up your forearm.
4. Close it. Zipped or buttoned, the front should lie flat without pulling into creases around the closure. Snug across the chest is fine. Strained is not.
5. Raise your arms. The hem will lift a little, which is normal. It shouldn't climb well above your waistband.
6. Add your heaviest layer. Put on the sweater you'd wear in the coldest month you plan to wear the jacket. If it only works over a T-shirt, decide whether that is how you'll wear it.

Should you size up in a leather jacket, or keep your usual size?

Start from the right baseline. Leather doesn't stretch the way fabric does, so your leather size is usually one size above the size you wear in cotton, denim or knit jackets. Take that as your starting point, then use these rules, which all come back to which parts of the fit are fixed.

Size up when

• The shoulders feel tight, or the seam sits inside your shoulder bone.
• The sleeves are short at the wrist.
• Reaching forward pulls hard across your back.
• It only closes when you hold your breath, or only over a T-shirt when you need room for a sweater.

Keep that size when

• The shoulders and sleeves are right, and the only issue is that the chest feels close or the leather feels a little firm. That is the part that softens and gives.
• The next size up would put the shoulder seam past your shoulder bone. A jacket that is too big in the shoulders looks borrowed, and that doesn't wear in either.

What if you're between sizes?

Let the shoulders decide. If the size you're trying fits the shoulders and is only close across the chest, keep it. If it is tight at the shoulders or short in the sleeves, go up. Never choose a size smaller than your shoulders and count on the leather to catch up. It won't.

The most common sizing mistake with leather is the hopeful one: choosing a snug size because "leather stretches." It softens. It doesn't grow.

Where can you find each style's measurements?

Every cut sits on the body differently, so your size in one style won't necessarily match your size in another. Before you order, check that style's chart on our Size & Fit page.

The most reliable comparison is a jacket you already own and like. Lay it flat and measure across the chest from armpit to armpit, across the back from shoulder seam to shoulder seam, and down the sleeve from the shoulder seam to the cuff. Then hold those numbers against the chart. Your own jacket will tell you more than any size label.

With your numbers in hand, browse men's jackets or women's jackets. If you're considering the Corso Bomber, measure your favorite jacket against its chart before you choose.

And if a jacket arrives and doesn't fit the way it should, you have 30 days to return it. The details are in our return policy. Try it on at home, over your usual layers, and work through the list above.

FAQ

How much does a leather jacket stretch?

Only a little, and mainly across the chest and back. There is no reliable figure, and the numbers quoted online aren't based on measurement. Expect the jacket to become more comfortable, not a size bigger.

Does lambskin stretch more than cowhide?

Lambskin is thinner and more supple, so it softens and shapes to you faster than heavy cowhide. It still doesn't get longer, and its shoulders still don't move.

Will a tight leather jacket loosen up?

If it is only close across the chest, yes, somewhat. If it is tight at the shoulders or short in the sleeves, no. The cut fixes those.

Should a leather jacket be tight or loose?

Neither. It should be close through the body, allow full movement through the shoulders and arms, and leave room for the layer you will wear underneath. Because leather doesn't stretch like fabric, most people should size up from their usual fabric-jacket size.

Can you stretch a leather jacket on purpose?

Not in any way we would recommend. Wetting, heating or forcing the leather can stiffen, mark or weaken it, and it still won't move the shoulder seams or add length. Choose the size that fits the fixed parts.

Do leather jackets shrink?

Not with normal wear. Leather that is soaked and then dried quickly near heat can tighten and stiffen, so let a wet jacket dry slowly at room temperature. Our care guide covers the rest.