Most polo shirt descriptions are unreadable because they mix up two different things. Piqué is a knit structure. Cotton is a fiber. “Cotton piqué” describes both and means something; “piqué fabric blend” describes neither and means nothing.
This guide separates them — the knit structures you will actually encounter, the fibers and blends underneath, and the one specification that would settle every argument if brands published it. Almost none of them do.
What’s Inside
Knit Structures: How the Yarn Is Built
The knit decides how a shirt holds its shape, how it drapes, how it breathes and how it takes decoration. Two shirts of identical fiber content in different knits are different garments.
Piqué
The traditional polo knit, with a raised waffle texture that gives the fabric body. That structure is what makes a polo hold its own shape where a jersey T-shirt goes limp, and it is why the collar sits up rather than folding flat.
It also hides small irregularities, which is why embroidered work uniforms are almost always piqué.
Petit Piqué and Mini Piqué
Finer versions of the same structure. Lacoste invented petit piqué for the L.12.12 in 1933, and it is the reason that shirt does not feel like a supermarket polo of identical 100% cotton content.
A finer knit drapes closer to the body and looks less sporty. The trade is that it creases more readily than a heavy piqué, because there is less structure resisting the fold.
Jersey
Smooth and flat, the same knit as a T-shirt. It drapes softly and has no texture, which makes it the most casual-looking option and the one that shows the body most.
The flat face matters commercially: Gildan’s DryBlend polo is a smooth jersey knit, and vinyl and heat transfer bond to a flat surface far better than to a textured one.
Interlock
A double-knit — two layers of jersey knitted together — so it is denser, heavier and smooth on both faces. It has more body than jersey without piqué’s texture, and it does not curl at cut edges the way jersey does.
Ralph Lauren and Lands’ End both use interlock. It is the choice when you want weight and a clean face at the same time, which is why it turns up in extended sizes where a large panel needs body.
Mesh
An open knit built to move air. Ralph Lauren’s Custom Slim mesh polo is the classic example, and Callaway builds its Core Performance shirt from a double knit mesh.
Mesh is the coolest option and the least formal — the openness is visible close up, which reads as sportswear rather than smart casual.
Fibers and Blends
Cotton, and the Grades Above It
Not all cotton on a label is the same cotton. Three terms appear on polo shirts and each means something specific.
Ringspun describes how the yarn is made: the fibers are twisted and thinned continuously, producing a smoother, stronger yarn than the cheaper open-end process. Gildan specifies 100% ringspun cotton on its Ultra Cotton blank for exactly that reason.
Supima and Pima describe the fiber itself — extra-long staple cotton, where longer individual fibers mean fewer ends poking out of the yarn, so the fabric is smoother and pills less. Supima is the trademarked American-grown version. Lands’ End and Lacoste both use them.
Mercerized is a finish rather than a fiber or a knit — the yarn is treated under tension in caustic soda, which makes it stronger, more lustrous and better at holding dye.
Polyester and Cotton-Poly Blends
Polyester wicks, dries fast and is dimensionally stable — it does not shrink or grow through washing, which is why extended sizes and golf shirts skew heavily towards it. Nike, Under Armour, Callaway and IZOD all build their performance polos from 100% polyester.
Blends split the difference at fixed ratios you will see repeatedly. Hanes runs 60% cotton with 40% polyester; Gildan’s DryBlend is 50/50; Van Heusen’s honeycomb polo is 60/40. More polyester means more wicking and less shrinkage; more cotton means better drape and a less clingy hand.
Elastane: Where Stretch Appears and Disappears
Elastane shows up in the middle of the market and vanishes again at the top, which is not what most buyers expect.
Tommy Hilfiger’s slim polo runs 97% cotton with 3% elastane. Lacoste’s stretch mini piqué runs 94/6. Both are enough to let a narrow cut move.
Above that tier it goes away. Fred Perry’s M3600 and Lacoste’s own L.12.12 are both 100% cotton deliberately, because a rigid piqué holds the defined outline those shirts are known for. Below about 3% the elastane is doing more for the label than for the wearer.
This is the single most useful thing to check before sizing down, and the reasoning is in the polo shirt fit guide.
Fabric Weight: The Spec Nobody Publishes
Weight in ounces per square yard, or grams per square metre, is the figure every buying guide tells you to compare. Across every fashion brand researched for this site — Lacoste, Ralph Lauren, Fred Perry, Tommy Hilfiger, Hanes, Amazon Essentials — not one publishes it.
The exception is the trade. Blanks and corporate-apparel makers publish weight as standard, because a decorator has to specify and quote a job before handling the garment.
| Shirt | Published weight |
|---|---|
| Gildan G380 Ultra Cotton piqué | 6.5 oz/yd² (about 220 GSM) |
| Gildan DryBlend jersey | 6.0 oz/yd² (about 200 GSM) |
| Callaway Core Performance double knit mesh | 5.6 oz/yd² (about 190 GSM) |
| Every retail brand checked | Not published |
Heavier is not automatically better. A heavy, loosely knitted piqué loses its shape faster than a lighter, tightly knitted one, and a heavy shirt in an extended size starts to hang under its own weight. Weight is a property, not a grade.
Where it does decide things is decoration, which is covered in best polo shirts for embroidery and vinyl.
Finishes Are Not Fabrics
Brand terms like Dri-FIT, Opti-Dri, X-Temp, DryBlend, Swing Flex and Stain Shield are finishes or fabric programmes, not knit structures or fibers. They describe a treatment or a performance claim layered on top of a fabric that still has a knit and a composition underneath.
Read them as claims, and look for the composition separately. Two of these — Van Heusen’s Stain Shield and IZOD’s Swing Flex — sit on fabrics whose composition the brand does publish, which is the combination you want.
A finish also wears off. Stain resistance and wicking treatments degrade with washing in a way that fiber content and knit structure never do.
Which Fabric for Which Job
| If you want | Look for |
|---|---|
| A structured, smart outline | 100% cotton piqué |
| Something that drapes closer | Petit or mini piqué, or interlock |
| Real heat performance | Mesh, or polyester |
| A close cut that still moves | Cotton with 3–6% elastane |
| Low maintenance and no shrinkage | A 50/50 or 60/40 blend |
| A surface for vinyl printing | Smooth jersey |
| A surface for embroidery | Piqué, heaviest available |
How these choices play out across price tiers is set out in best polo shirts for the money, and the wider buying decision is in the guide to choosing a polo shirt.
Polo Shirt Fabric FAQ
Is piqué a fabric or a knit?
A knit structure. Cotton, polyester and blends can all be knitted as piqué, which is why “piqué” on its own tells you nothing about what the shirt is made of.
What is the difference between piqué and jersey?
Piqué has a raised waffle texture and holds its shape; jersey is smooth, flat and drapes like a T-shirt. Piqué looks smarter, jersey feels softer, and vinyl bonds better to jersey.
Is Supima cotton worth paying for?
It is extra-long staple cotton, so the yarn is smoother and pills less. On a shirt you will own for years that is a real difference; on a work uniform it is not where the money should go.
What GSM should a polo shirt be?
The question cannot be answered by comparison, because no major fashion brand publishes a weight. The blanks that do run from about 190 to 220 GSM, which is a reasonable range to expect.
Does a cotton-polyester blend shrink?
Much less than pure cotton, because polyester is dimensionally stable. The higher the polyester content, the less the shirt moves in the wash.
What does mercerized mean?
A finishing treatment where yarn is processed under tension in caustic soda, making it stronger, more lustrous and better at holding dye. It is a finish, not a fiber or a knit.
Final Thoughts on Polo Shirt Fabric
Read the knit first, the fiber second and the brand’s performance name last. A listing that names all three has told you what you are buying; one that names only a trademarked finish has told you what it wants you to feel about it.
