Skip to content
Il Sartoriale The World of Fine Menswear
★
Il Sartoriale
Start here Bespoke tailors Shoemakers Shirtmakers Cloth makers & merchants Fabrics & materials
Craft How clothes are made Tailoring styles Craftsmen History
Clothing GarmentsAccessories BrandsPeople
Places CitiesCountries World map
Tools Find a tailor or shoemakerComparisons PricesGlossary LearnNews Ask the ArchiveAI agents ★ SavedFree API
About About usMethodology Editorial policy Sources Image licensing How we assess CorrectionsContact
Settings
Dark mode
Interface language

Guided view
New to this? Every page opens with a plain-language explanation before the detail begins, and technical terms are expanded where they appear.

Expert view
You already know the vocabulary. Straight to the substance, with the introductory explanations hidden. This is the default.

★ Your saved pages
470 entries across tailoring, shoemaking, cloth and craft Reference publication: we sell nothing and rank nobody for payment Every figure carries its source and the date it was checked

Start here · Start Here

How a suit should fit

When buying a suit, get the shoulders right first because they cannot be altered, while the collar, chest, sleeves, length and waist can be adjusted.

Fit is judged at specific points, and they are worth learning in order of alterability. The shoulder cannot be changed and must be right when you buy. The collar, chest and sleeves can be adjusted. Length and waist are straightforward. Everything else is detail.

A jacket collar sitting flush on a shirt collar
A jacket collar sitting flush on a shirt collar

The jacket, in order

  • Shoulder. The seam ends where your shoulder ends. Not before, producing a divot; not after, producing a droop. This cannot be altered meaningfully; it is the buying decision.
  • Collar. Against the shirt collar with no gap, standing and walking. A gap means the balance is wrong and a good tailor can fix it.
  • Chest. Button it. A flat hand should slide inside comfortably; a fist should not. The lapels should lie flat with no X-shaped strain at the button.
  • Sleeve. Ends at the wrist bone with about a centimetre of shirt cuff showing. Both sleeves may need to be different lengths.
  • Length. Covers the seat. This moves with fashion more than any other measurement, and covering the seat is the version that ages best.
  • Waist. Suppressed enough to suggest a shape, not so much that the front pulls.

The trousers

  • Waist. Sits where the trouser was cut to sit and stays there without a belt straining. If you are constantly pulling them up, the rise is wrong for how you are wearing them.
  • Seat. Smooth, with no horizontal pulling under the buttocks and no sagging.
  • Thigh. Enough room to sit down; not so much that the leg looks unshaped.
  • Length and break. A matter of taste, but consistent with the width of the leg.

What good fit is not

Tight. The fashion of the 2010s for close-cut jackets and short trousers produced a great deal of clothing that fitted in the sense that it was small, which is different. A jacket you cannot fasten comfortably or reach forward in does not fit.

It is also not the same on everyone. A drape cut and a close-cut coat are both correctly fitted and look nothing alike, because they answer different questions about what a coat should do.

1 2 3 4 5 6
  1. 1
    Shoulder
    ends where yours ends; cannot be altered
  2. 2
    Collar
    against the shirt collar, standing and moving
  3. 3
    Chest
    a flat hand slides in; a fist does not
  4. 4
    Sleeve
    to the wrist bone, a centimetre of cuff showing
  5. 5
    Length
    covers the seat
  6. 6
    Waist
    suppressed, but the front does not pull
Where a jacket is judged, in order of what can be fixed The shoulder comes first because it is the one thing that cannot be altered; everything below it can. Numbers two to six are all ordinary alterations for a competent tailor. Diagram drawn for Il Sartoriale.

At a glance

Cannot be altered
The shoulder
Chest test
A flat hand slides in comfortably; a fist does not
Sleeve
To the wrist bone, showing about 1 cm of shirt cuff
Jacket length
Covers the seat
Last reviewed: September 2026 Report an error on this page

Related

Start hereChoosing your first serious suit GarmentThe suit GuideHow to tell a well-made jacket in ninety seconds GarmentTrousers Glossary termBalance Historical figureCary Grant Glossary termCollar gap Glossary termDrag lines Start hereUnderstanding fabric Start hereCaring for fine clothing Start hereBespoke, made-to-measure and ready-to-wear Start hereHow a great suit is actually made
Picture credits 1
  1. A jacket collar sitting flush on a shirt collar: Original art · Il Sartoriale · Il Sartoriale · Il Sartoriale original art

Image policy