The short answer
A weave is how the yarns interlace; a pattern is the design you see, made by the weave, by colored yarns or both. The most formal suits are dark solids and near-solids such as fine twill, birdseye, nailhead and sharkskin. Pinstripes are business wear. Herringbone, glen check and windowpane are less formal, and houndstooth and tweed checks are the most casual.
- Weave is structure (plain, twill, herringbone, hopsack); pattern is the design you see (stripes, checks, dots).
- Birdseye, nailhead and sharkskin read as solid from a few paces, so they are as formal and versatile as a plain suit.
- Stripes are city and business patterns; checks have country roots and read less formal.
- The smaller and lower in contrast a pattern is, the more formal it looks.
- Wear one bold pattern at a time, and vary the scale when you combine patterns.
In this guide
- What is the difference between a weave and a pattern?
- What are the main suit weaves?
- Which patterns read as solid from a distance?
- Pinstripe vs chalk stripe: what is the difference?
- What are the classic suit checks?
- How formal is each weave and pattern?
- How does each pattern read at a distance?
- Which weaves and patterns suit which season?
- How do you wear a patterned suit with a shirt and tie?
- Which suit pattern should you buy first?
- Questions people ask
Pick up any fabric book and the swatches blur into a list of names: serge, birdseye, sharkskin, glen check, chalk stripe. Some of those names describe how the fabric is woven, some describe the pattern you see, and a few describe both. The difference matters. The weave decides how a suit drapes, breathes and wears, while the pattern decides how formal it looks and how loudly it speaks across a room. Here are the weaves and patterns you will meet, how formal each one is, how it reads at a distance and how to wear it.
Weaves and patterns at a glance
- Most formal
- Plain dark worsted in navy or charcoal
- Read as solid from a distance
- Fine twill, birdseye, nailhead, sharkskin, pick-and-pick
- Business patterns
- Pinstripe and chalk stripe
- Less formal
- Herringbone, glen check, windowpane
- Most casual
- Houndstooth, tweed and bold country checks
- Mixing rule
- One bold pattern at a time; vary the scale
What is the difference between a weave and a pattern?
A weave is the structure of the fabric: the way the lengthwise yarns (the warp) and the crosswise yarns (the weft) pass over and under each other. Plain weave, twill, herringbone and hopsack are weaves. A pattern is the design you see. It can come from the weave alone, from yarns of different colors, or from both together. Glen check is a pattern made by arranging dark and light yarns in a twill. Herringbone is a weave that needs no color change at all. Sharkskin uses a weave and alternating colors together to make its two-tone effect.
Warp and weft
The warp is the set of yarns running along the length of the fabric, held tight on the loom. The weft yarns pass across them, over and under, to form the weave. A single weft yarn is called a pick.
Weaves
How the yarns interlace
- Plain weave, twill, gabardine, herringbone, hopsack
- Decide drape, breathability and durability
- Show as texture, often without any color change
- Matter most for comfort and wear
Patterns
The design you see
- Birdseye, sharkskin, stripes, glen check, windowpane, houndstooth
- Made by colored yarns, the weave, or both
- Decide formality and how the suit reads at a distance
- Matter most for style and versatility
What are the main suit weaves?
| Weave | How it is made | What it looks like | How it behaves | Best for |
|---|---|---|---|---|
| Plain weave | Over one, under one | A fine, matte grid | Breathes well; creases a little more than twill in light weights | Summer and year-round suits |
| Twill (serge) | Yarns pass over and under two or more others, stepping along each row | Fine diagonal lines | Smooth, durable, drapes well | Year-round business suits |
| Gabardine | A tight, steep twill | Crisp, clear diagonal ribs | Dense and hard-wearing; breathes less | Trousers, cool-weather suits, raincoats |
| Herringbone | A twill that reverses direction at regular intervals | A zigzag of V shapes | Textured; hides wear and small marks | Autumn and winter suits, jackets, coats |
| Hopsack | Two or more yarns travel together as one, like a basket | A small, open basket texture | Breathes and resists creasing | Blazers and summer suits |
| Barathea | A fine broken weave with a pebbled surface | Matte and finely textured | Smooth drape with little shine | Dinner suits and evening wear |
Two names you will also see are not weaves at all. Flannel is defined by its finish: the fabric is brushed so a soft, slightly fuzzy surface hides the weave underneath. Tweed is a family of rugged woolen fabrics, often woven in herringbone, twill or check. Both are covered in our guides to flannel suits and tweed.
Which patterns read as solid from a distance?
A group of small, low-contrast patterns gives a suit texture up close while reading as a solid color from across a room. They are as formal as a plain suit, hide lint and small marks better, and are among the most useful business fabrics you can choose.
Birdseye and nailhead
Birdseye is a tiny repeating pattern of small shapes, each with a dot at its center, like a bird's eye. It is made by combining two colors of yarn with a weave that forms the dot, usually dark on a slightly lighter ground. Navy and charcoal birdseye are classic business suits: textured at conversation distance and solid a few paces away. Nailhead is similar but simpler: an even grid of tiny single dots, like the heads of nails, made by contrasting yarns in the weave. It looks slightly crisper and more uniform than birdseye and works in exactly the same places.
Sharkskin
Sharkskin is woven with alternating light and dark yarns in both directions, usually in a twill, which creates a tiny stepped two-tone pattern and a subtle sheen. In mid-gray it can look almost silvery. It is smooth, crisp and hard-wearing, and it reads as a solid with a slight shimmer. The sheen shows more in lighter colors, so charcoal and navy sharkskin look more conservative than light gray.
Pick-and-pick and fine twill
Pick-and-pick alternates two colors of yarn, thread by thread, to give a fine, speckled surface. A fine twill in a single color shows only faint diagonal lines. Both read as solid at any distance beyond arm's length, and both are the closest thing to a plain suit with a little life in it.
Pinstripe vs chalk stripe: what is the difference?
Stripes are the classic business pattern, and they differ in how the line is drawn. A pinstripe is a very fine, crisp line, often made with a single contrasting yarn, so it looks like a row of pinpricks. A pencil stripe is slightly bolder. A chalk stripe is wider and softer-edged, like a line drawn with tailor's chalk, and is usually found on flannel, where the brushed surface blurs the edge.
| Stripe | The line | Usual fabric | Character |
|---|---|---|---|
| Pinstripe | Very fine and sharp, often a single yarn | Smooth worsted | Crisp and businesslike |
| Pencil stripe | Fine, slightly bolder than a pinstripe | Worsted | Clear but restrained |
| Chalk stripe | Wider, with soft, blurred edges | Flannel | Softer and a little more relaxed |
| Shadow stripe | Tone on tone, made by a change in weave rather than color | Worsted | Subtle; reads almost solid |
Spacing matters as much as the line. Stripes set close together look quieter and more uniform; widely spaced stripes look bolder and more traditional. Contrast matters too: a navy suit with a faint blue stripe is far more discreet than one with a bright white stripe. For business, choose a fine stripe with low contrast. Vertical stripes also draw the eye up and down, which can make the wearer look taller and slimmer.
What are the classic suit checks?
Checks have country roots, and they still read less formal than stripes. From quietest to boldest, these are the ones you will see.
Glen check and Prince of Wales check
Glen check, also called glen plaid or Glen Urquhart check, began in the 1840s on the Glenurquhart estate in Inverness-shire, Scotland, where the Countess of Seafield had it made for her gamekeepers. Small checks of alternating dark and light stripes cross to form larger, irregular squares. Prince of Wales check is the same family, named after the princes who made it famous: Edward VII while he was Prince of Wales, and later Edward VIII. The name is often used for a glen check with a colored overcheck, a thin line in a contrasting color laid over the pattern.
Windowpane
Windowpane is a large check of thin lines, like the frame of a window, on a plain ground. Faint, tonal windowpanes on navy or gray work for business in less formal offices; bold, high-contrast ones belong on sport coats. A windowpane can also be laid over another pattern, such as a glen check, as an overcheck.
Houndstooth and country checks
Houndstooth, also called dogtooth, is a broken check of jagged, four-pointed shapes, made by alternating groups of dark and light yarns in a twill. Small, low-contrast houndstooth can make a smart suit; larger versions suit sport coats, odd trousers and overcoats. Gun club checks, tattersalls and bold multicolored checks belong to tweeds and country jackets, the least formal end of the scale.
How formal is each weave and pattern?
Formality follows two rules. The smaller and quieter the pattern, the more formal it looks. And stripes are city, checks are country. Color matters too, so a dark navy glen check can look dressier than a light gray pinstripe.
Most formal
Plain dark worsted
Navy or charcoal, smooth twill or plain weave
Near-solids
Birdseye, nailhead, fine twill, pick-and-pick
Sharkskin
A subtle two-tone sheen
Pinstripe and pencil stripe
Classic business
Chalk stripe
Softer, usually on flannel
Herringbone
Fine versions for business; bold ones in tweed
Glen check
Low contrast for business; bold for weekends
Windowpane
Tonal for the office; bold for sport coats
Houndstooth and country checks
Jackets, coats and tweeds
Most casual
| Interview and boardroom | Everyday office | Wedding guest | Smart casual | Reads solid across a room | |
|---|---|---|---|---|---|
| Plain dark worsted | |||||
| Birdseye or nailhead | |||||
| Sharkskin | |||||
| Pinstripe | |||||
| Chalk stripe | |||||
| Fine herringbone | |||||
| Glen check | |||||
| Windowpane | |||||
| Houndstooth |
How does each pattern read at a distance?
The eye blends small patterns into a single color as distance grows. Birdseye, nailhead and sharkskin merge into a solid within a few paces. A fine pinstripe fades to a faint texture, a chalk stripe stays visible across a room, and a glen check softens into a mottled mid-tone, with any overcheck still showing. Contrast decides how far a pattern carries: a tonal pattern disappears quickly, while white on navy can be seen from across the street. Very fine, high-contrast stripes and checks can also shimmer on camera, so for video calls and photographs, near-solids are the safe choice.
Which weaves and patterns suit which season?
Pattern often travels with weight. Herringbone, chalk stripes on flannel, glen checks and houndstooth are traditionally woven in heavier fabrics and read as autumn and winter. Birdseye, sharkskin, nailhead and pinstripe worsteds usually sit in the year-round band of about 9 to 11 oz (280 to 340 g). Plain weave, hopsack and open high-twist weaves are the summer structures. Our guide to suit fabric weight sets out the weight bands.
How do you wear a patterned suit with a shirt and tie?
The rule is simple: one bold pattern at a time, and different scales when you combine patterns. A patterned suit is easiest with a plain or very fine shirt and a solid or small-patterned tie. If the suit has a large pattern, keep the shirt and tie smaller; if it has a fine one, a slightly larger tie pattern works. Our guide to pattern mixing goes further, and how to match a tie, shirt and suit covers color.
| Suit | Shirt | Tie | Avoid |
|---|---|---|---|
| Navy birdseye or nailhead | White or light blue, plain | Almost anything: solid, small dots, stripes | Tiny dot ties at the same scale, which can blur |
| Gray sharkskin | White or pale blue | Solid grenadine or a bold, simple stripe | Shiny satin ties that compete with the sheen |
| Navy or charcoal pinstripe | White, light blue or a fine check | Solid, small pattern or wide-spaced stripe | Striped shirts with the same stripe width |
| Charcoal chalk stripe flannel | Light blue or white | Solid wool or knit tie | Bold striped shirts |
| Gray glen check | Plain white or light blue | Solid knit, grenadine or small pattern | Checked shirts of a similar size |
| Brown herringbone | Light blue, white or cream | Wool, knit or paisley in green, rust or navy | Shiny formal silk ties |
Which suit pattern should you buy first?
Build from quiet to bold. Each step adds variety without losing versatility.
- 1.First: a plain navy or charcoal worsted, which works everywhere. See suit colors.
- 2.Second: a near-solid such as mid-gray birdseye or sharkskin, which looks different but goes to the same places.
- 3.Third: a pinstripe or chalk stripe for business, or a subtle glen check if your work is less formal.
- 4.Later: herringbone, windowpane and houndstooth, often best as odd jackets rather than full suits.
Before you choose a patterned fabric
- See the largest piece available, in daylight
- Step back and look from three or four paces
- Ask how the pattern will be matched at the seams and pockets
- Check whether matching stripes or checks needs extra fabric
- Picture it with the shirts and ties you already own
- Ask yourself whether you will still like it in ten years; quiet patterns rarely date
Weave decides how a suit behaves; pattern decides what it says. Start with a solid or a near-solid, add stripes for business and checks for character, and judge every swatch from a few paces away. For how fiber and weight fit in, see suit fabrics explained, and for how many suits a rotation needs, see how many suits you need.
Questions people ask
Is herringbone formal?
Herringbone sits in the middle of the formality scale. A fine, low-contrast herringbone in navy or charcoal worsted is fine for business, while a bold herringbone tweed is a country and weekend fabric. It is less formal than a plain or pinstripe suit and more formal than most checks.
What is sharkskin fabric?
Sharkskin is a suit fabric woven with alternating light and dark yarns, usually in a twill, which creates a tiny two-tone pattern and a subtle sheen. It reads as a solid from a distance and is smooth, crisp and hard-wearing. Charcoal and navy sharkskin are conservative business choices; light gray shows the sheen more.
What is a birdseye suit?
A birdseye suit is made from fabric with a tiny repeating pattern of small shapes, each with a dot at its center like a bird's eye. The pattern comes from two colors of yarn and a particular weave. Up close it adds texture; from a few paces it reads as solid, so a birdseye suit is as formal and versatile as a plain one.
Can you wear a pinstripe suit to a wedding?
You can wear a pinstripe suit to a wedding, especially a fine, low-contrast stripe in navy or charcoal. Pinstripes carry a strong business association, so a plain or near-solid suit usually looks more festive. Soften a pinstripe with a lighter shirt and a celebratory tie.
What is the difference between glen check and Prince of Wales check?
Glen check is the pattern of small checks that cross to form larger, irregular squares, first made in the 1840s on the Glenurquhart estate in Scotland. Prince of Wales check belongs to the same family and is named after Edward VII and Edward VIII, who made it famous as Princes of Wales. Today the name usually means a glen check with a colored overcheck.
Is a patterned suit less versatile than a solid?
Generally, yes. A bold pattern is memorable, so people notice when you wear it often, and it limits your shirt and tie choices. Near-solids such as birdseye, nailhead and sharkskin are the exception: they are as versatile as a plain suit.
What is the difference between twill and plain weave?
In a plain weave, each yarn passes over one and under one, making a simple grid that breathes well. In a twill, yarns pass over and under two or more, stepping along each row, which creates diagonal lines and a smoother, denser fabric that drapes and wears well. Most year-round business suits are twill, and many summer suits are plain weave.
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