Blazer Sleeve Length: How Much Shirt Cuff Should Show?

Sleeve length is the cheapest fit problem to fix and the one most men leave alone for years. It takes a tailor twenty minutes. It is visible in every photograph you appear in.

Where the sleeve should end

Stand with your arms relaxed at your sides. Find the bone that sticks out on the outside of your wrist. The blazer sleeve should end there — at the point where your wrist becomes your hand.

The shirt sleeve extends a little further, so about a centimetre of shirt cuff shows below the jacket.

1 2 3

1. Blazer cuff — Ends at the wrist bone.
2. Shirt cuff — About one centimetre visible below it.
3. Jacket hem — Roughly level with the cuff on most builds.

Why the visible cuff matters

It is not decoration and it is not a rule invented for its own sake.

The cuff breaks the line between the dark mass of the jacket sleeve and your hand. Without that break, the sleeve appears to continue into the hand and the arm reads as swallowed — the same effect that makes a jacket look inherited.

There is a second, more practical reason. A jacket sleeve that reaches the hand takes all the abrasion from desks, tables and car doors. A shirt cuff is washable and replaceable; a jacket cuff is neither.

How much cuff, exactly?

About a centimetre. Between half a centimetre and a centimetre and a half is all normal.

Two things shift it:

• Shirt cuff type. A double cuff is bulkier and usually shows slightly more.
• Arm asymmetry. Almost everyone has one shoulder lower than the other, so one sleeve will show marginally more cuff than the other. This is normal, and a good tailor will set the two sleeves at slightly different lengths to compensate.

Checking it properly

The sleeve length check

Do this wearing the shirt you would normally wear under the jacket. A t-shirt tells you nothing.

1. Stand with arms relaxed, not held stiffly at your sides A held-straight arm sits differently from a relaxed one.
2. Check that the jacket cuff reaches the wrist bone Not the base of the thumb, and not past it.
3. Confirm about a centimetre of shirt shows On both arms — they may differ slightly.
4. Bend your elbow to ninety degrees The cuff will ride up. It should not disappear entirely under the jacket.
5. Sit down and place your hands on a table This is how the sleeve is seen in most meetings.

Long, short and why long is worse

Common problem

Photography pending Common problem — Sleeve too long. Same person, same pose, same light as the other panel.

Sleeve too long

• No shirt cuff visible
• The cuff sits on or past the base of the thumb
• Fabric bunches at the wrist when the arm hangs
• The jacket reads as too big overall, even when it is not

What to aim for

Photography pending What to aim for — Sleeve correct. Same person, same pose, same light as the other panel.

Sleeve correct

• Cuff at the wrist bone
• A clean centimetre of shirt showing
• No bunching with the arm relaxed
• The arm reads as finished

A sleeve slightly shorter than ideal reads as deliberate. A sleeve too long reads as a garment that does not belong to you, and it drags the perceived fit of the entire jacket down with it. Given a choice between erring long and erring short, err short.

When it cannot simply be shortened

Sleeve shortening is routine on most blazers. Two situations complicate it.

Working buttonholes. Some jackets have functioning buttonholes on the cuff. Shortening from the cuff would cut through them, so the sleeve has to be shortened from the shoulder instead — which means detaching and resetting the sleeve head. It is skilled, slower and considerably more expensive.

Very little seam allowance. Lengthening a sleeve depends on how much fabric was left inside the cuff. On many ready-made jackets that is a centimetre or less, and the old crease line may remain visible after pressing.

Both are reasons to check sleeve length before you buy rather than after.

Sleeve length mistakes

1. Leaving it long because it might shrink

   Tailored jackets are not washed and do not shrink meaningfully. The sleeve will be long for the life of the jacket.

   Fix Have it shortened. It is one of the cheapest alterations available.

2. Checking sleeve length over a t-shirt

   Without a shirt cuff there is no reference point, and you will almost always leave it too long.

   Fix Wear a proper shirt to the fitting.

3. Setting both sleeves to the same length

   Most people have one shoulder lower than the other, so equal sleeves produce visibly unequal cuffs.

   Fix Ask the tailor to check each arm separately.

4. Judging with the arm held rigidly straight

   A stiffly held arm pulls the sleeve up and makes it look shorter than it is.

   Fix Let the arm hang naturally, then look.

The Radha perspective

We measure each sleeve separately as a matter of course, because the difference between a customer’s two arms is almost never zero. It is a small thing that takes an extra minute at the measuring stage and is effectively impossible to correct convincingly later.

Next step

Put on your blazer over a proper shirt and look at the cuffs in a mirror. If you cannot see the shirt, take the jacket to a tailor this week — it is the highest-value twenty minutes available to your wardrobe.