What Is Pima Cotton? (And How It Compares to Egyptian)

Pima cotton is one of the best cottons in the world, and we're an Egyptian cotton brand saying so. That's not diplomacy. It's just true, and pretending otherwise would make us exactly the kind of marketer this journal usually spends its time picking apart.

So here's the honest version. What Pima actually is, what "Supima" adds on top, how it stacks up against Egyptian Giza cotton, and — the part nobody selling you either one wants to dwell on — how both names get stretched, blurred and abused on labels until they mean almost nothing.

What is Pima cotton?

Pima is an extra-long-staple (ELS) cotton. "Staple" is simply the length of an individual cotton fibre before it's spun into yarn, and it is the single most important thing about any cotton, full stop. Ordinary commodity cotton — the upland stuff that makes up the overwhelming majority of the world crop — has short fibres, roughly the length of a fingernail. Pima's fibres are dramatically longer.

The name comes from the Pima people of the American Southwest, who worked on the early breeding trials in Arizona in the 1900s. Today Pima is grown mainly in the United States (California, Arizona, New Mexico, west Texas) and in Peru, with some cultivation in Australia and elsewhere. Between them, all the ELS cottons on earth make up only a low single-digit percentage of global cotton production. It's a small, fussy, irrigation-hungry crop, and it costs more to grow for exactly that reason.

Why staple length changes everything

Longer fibres mean fewer fibre ends in any given length of yarn. Fewer ends means:

• Smoothness. The loose ends that poke out of a short-staple yarn are what your skin reads as roughness. Long-staple yarn has far fewer of them.
• Strength. Long fibres grip each other along more of their length, so the yarn needs less brutal twist to hold together — and a less-tortured yarn is a softer one.
• Pill resistance. Pilling is fibre ends migrating out of the cloth and balling up. Fewer ends, fewer pills. This is why a good ELS shirt gets softer over years while a cheap one goes fuzzy in a month.
• Fineness. Long fibres can be spun into finer, higher-count yarns without falling apart — which is what allows genuinely lightweight cloth that still lasts.

None of that can be added later. No finishing chemical, no silicone softener, no thread-count headline creates it. It's decided in the field, by the plant. That's the whole game.

What does Supima mean?

Here's where a lot of confusion lives. Supima is not a different cotton. It's a name — a registered trademark, short for "Superior Pima" — administered by a US grower association, and licensed only for Pima that is 100% American-grown.

So the relationship is simple:

• Pima = the fibre type (an extra-long-staple cotton), grown in several countries.
• Supima = a licensed trademark applied to American-grown Pima, with a traceability programme behind it.

All Supima is Pima. Not all Pima is Supima. And that distinction matters more than it sounds, because it points at the one structural advantage the Americans have built for themselves: the word is owned. Somebody can be sued for misusing "Supima" in a way that nobody can be sued for misusing "Egyptian cotton," which is just a geographic phrase floating free in the world. Whatever you think of the marketing, that's a genuinely useful piece of consumer protection, and Egypt has no equivalent of it.

Pima vs Egyptian cotton: cousins, not enemies

The internet loves a versus. This one is mostly manufactured.

Pima and the celebrated Egyptian Giza varieties are botanically the same species — Gossypium barbadense, the extra-long-staple family, as opposed to the upland Gossypium hirsutum that clothes most of the planet. They are, quite literally, relatives grown in different valleys. A Pima boll from the Central Valley and a Giza boll from the Nile Delta have more in common with each other than either has with the cotton in a supermarket t-shirt.

What differs is terroir and tradition. The Nile Delta's silt, heat and irrigation, plus a century-plus of Egyptian breeding programmes selecting for fineness and lustre, produced the Giza varieties. American and Peruvian growing conditions and breeding priorities produced Pima. Same family, different upbringing.

Where each tends to excel

Speaking in honest generalities — and any specific mill can upend these, so treat them as tendencies, not laws:

• Pima / Supima shines in knits. It has a deserved reputation for a soft, full, durable hand in jersey and interlock — the reason so many premium tees and polos build their pitch on it. Strong, plush, hard-wearing.
• Egyptian Giza shines in woven shirting. The Giza varieties are prized for fineness and a quiet natural lustre, which is what you want in a poplin, a twill or an oxford — cloth that has to drape, hold a collar, take a crease, and look like something rather than just feel like something.
• Both beat commodity cotton comfortably. If your choice is between real Pima and real Giza, you've already won. The gap between either of them and ordinary short-staple cotton is enormous. The gap between the two of them is a matter of character, and of what you're making.

We make shirts, in Cairo, from 2-ply long-staple Egyptian Giza cotton, and we chose that fibre for those reasons. If we made a heavyweight tee tomorrow, we would not sneer at anyone reaching for Supima. That's a good decision.

The part both camps skip: the label problem

Now the uncomfortable bit, and it cuts both ways.

"Egyptian cotton" is a geographic phrase with no meaningful policing at the point of sale. It gets stretched over blends, over lower-grade Egyptian crops that behave nothing like the famous varieties, and over cotton grown elsewhere but finished in Egypt. We've written about this at length in what Giza cotton actually is, because we'd rather you could catch us out than take us on faith.

But "Pima" gets abused too, and this is the part the American marketing rarely volunteers. The bare word "Pima" on a label is not, in itself, a guarantee of anything audited. It can front a blend. It can front cotton of an origin and quality you'll never be told. "Pima blend," "made with Pima," "Pima-rich" — every one of those is a sentence engineered to imply a fibre without committing to a percentage. It's the same trick, in a different accent. (The trademarked Supima mark, used properly, is a real step up here — that's precisely its value.)

So the honest, brand-agnostic rule is the same whichever camp you buy from: ignore the romantic noun and demand the specifics.

• Composition, stated plainly. "100%" and nothing hedged. If a percentage is missing, assume it's the smallest one they could get away with.
• Staple. Does the brand say long-staple or extra-long-staple — or does it only say a country?
• Ply. In shirting, 2-ply (two fine yarns twisted together per thread) is where durability and body come from. Silence on ply, in a shirt, is loud.
• Origin, specifically. Grown where? Woven where? Sewn where? A brand that's proud of its supply chain names it. A brand that isn't uses adjectives.
• Price sanity. ELS cotton — Pima or Giza — has a floor cost. Nobody sells a scarce material for less than it costs to make. A bargain here is a confession.

We go deeper on the head-to-head in Egyptian cotton vs Pima, including how the two behave over years of washing.

So which should you buy?

Buy the real one, in the construction that suits the garment. Real Supima in a tee will outlive three commodity tees. Real 2-ply Giza in an oxford will outlive almost anything, soften every year, and still look like a shirt when it's a decade old. Both statements are true at once, and any brand that needs you to believe only one of them is selling harder than it's telling.

Our contribution to the argument is the Memphis Oxford Shirt — 2-ply long-staple Egyptian Giza cotton, woven and sewn in Cairo, in an oxford weave chosen precisely because it hides nothing. If a fibre is short, an oxford tells on it. That's the point.

Frequently asked questions

What is Pima cotton?

Pima is an extra-long-staple (ELS) cotton, botanically Gossypium barbadense — the same family as the celebrated Egyptian Giza varieties. Its fibres are far longer than ordinary upland cotton, which is what makes it smoother, stronger, more resistant to pilling, and able to be spun into finer yarns. It's grown mainly in the United States and Peru, and all ELS cottons together account for only a small fraction of world cotton production.

What does Supima cotton mean?

Supima — short for "Superior Pima" — is a registered trademark licensed by a US grower association for Pima cotton grown entirely in the United States. It isn't a different plant: all Supima is Pima, but not all Pima is Supima. Its real value is that the word is legally owned and traceable, so it can't be slapped on anything the way looser terms can.

Is Pima cotton better than Egyptian cotton?

Neither is universally better — they're cousins from the same extra-long-staple species, grown in different places. In practice Pima and Supima have a deserved reputation in knits like tees and polos, while the Egyptian Giza varieties are especially prized for fine woven shirting, where lustre and drape matter. Both comfortably outperform ordinary short-staple commodity cotton, which is the comparison that actually changes how a garment feels and lasts.

Is Pima cotton ever faked?

Yes. The bare word "Pima" on a label isn't independently audited in the way the trademarked Supima mark is, so it can front blends or cotton whose origin and quality you're never told — "Pima blend," "made with Pima," "Pima-rich." It's the same over-claiming that plagues "Egyptian cotton," just in a different accent. Judge the composition percentage, the staple, the ply and the stated origin, not the romantic noun.

What should I look for instead of the name on the label?

Four things: a plainly stated 100% composition with no hedging; explicit mention of long-staple or extra-long-staple fibre; the ply of the yarn (2-ply matters enormously in shirting); and specific origin — grown where, woven where, sewn where. Then apply price sanity: extra-long-staple cotton has a floor cost, so a bargain is usually a confession that something was cut.

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Related reading: Egyptian cotton vs Pima vs Supima · What is Giza cotton? · How to spot fake Egyptian cotton