On labels they look like completely different things, but pima, Egyptian and Supima have a lot in common: all three are extra-long staple cottons. What changes is where they're grown, who guarantees the name and how much you can trust the label. Here are the real differences, and which one is worth it depending on what you're buying.
What Really Matters: Fiber Length
Most of the world's cotton is upland cotton, with shorter fibers. Pima, Egyptian and Supima belong to a different category, extra-long staple (ELS) cotton, with fibers over 1.4 inches (35 mm), 35% to 50% longer than conventional cotton.
A longer fiber can be spun into a finer yarn with fewer loose ends. The result is a fabric that is:
- Softer, because fewer fiber ends rub against your skin.
- Stronger, with less pilling, tearing and wear from washing.
- Longer-lasting in color, with less fading.
Pima cotton typically costs 30% to 50% more than regular cotton.
Pima Cotton
Pima belongs to the species Gossypium barbadense, native to South America, especially Peru and Ecuador. Cotton, some of it naturally long and soft, was being spun and woven in the Andes thousands of years ago. The name "pima" dates from the early 20th century, when the US Department of Agriculture developed a variety in Arizona and named it in honor of the Pima people.
Today it's grown mainly in the US, Peru and Australia. Peruvian pima is grown in the valleys of the northern coast and is often picked by hand, which protects the fiber.
Supima Cotton
Supima isn't a different plant: it's a trademark for pima cotton grown in the US, mainly in California, Arizona, New Mexico and Texas. The Supima Association licenses the name and verifies the supply chain, so an authentic Supima product can be traced back to the field. It accounts for less than 1% of the world's cotton.
All Supima is pima, but not all pima is Supima. Peruvian pima is the same species, with comparable quality, but it can't carry that name because it isn't grown in the US.
Egyptian Cotton
Egyptian cotton is grown in the Nile Valley, and its best-known varieties are also extra-long staple. It's the most famous of the three, especially for bed sheets, and also the one with the most authenticity problems.
Egypt grows only a tiny share of the world's cotton: less than 0.2% of expected global output in 2016–17. Fraud has been widespread. In 2016, Target said it would cut ties with the manufacturer Welspun India, accusing it of substituting cheaper, non-Egyptian cotton in sheets sold as Egyptian. The Cotton Egypt Association, which grants an official logo to suppliers of 100% Egyptian cotton, estimates that about 90% of global supplies branded as Egyptian cotton in 2016 were fake. If you buy Egyptian, look for the association's official logo.
Regular (Upland) Cotton
This is everyday cotton, and it makes up the vast majority of the world's production, with shorter fibers. It isn't "bad", but the fabric tends to feel rougher, pills sooner and loses its shape more easily. It's what most basic T-shirts and underwear are made of.
Comparison
| Pima | Supima | Egyptian | Regular (upland) | |
|---|---|---|---|---|
| Species | G. barbadense | G. barbadense | G. barbadense | G. hirsutum |
| Where it's grown | US, Peru and Australia | US only | Egypt | Worldwide |
| Fiber length | Extra-long | Extra-long | Extra-long in its ELS varieties | Shorter |
| Name guarantee | No official one | Supima Association license and traceability | Cotton Egypt Association logo | Not applicable |
| Price | High | High | High | Low |
Which One Is Best?
In fiber quality, the three extra-long staple cottons are very close. The real differences are origin and guarantees:
- Supima if you want maximum traceability and don't mind paying more.
- Peruvian pima if you want the same species and comparable quality, from the country where it originated.
- Egyptian only with the official logo, given its history of fraud.
- Regular cotton for clothes where softness and durability matter less.
What About Underwear?
Underwear sits against the most sensitive skin on your body, with friction and sweat, and it gets washed far more often than almost anything else you own. That's where an extra-long staple fiber makes the biggest difference: softer against your skin and more resistant to washing.
That's why at Egos In Check we make our underwear in organic Peruvian Pima cotton. We make thongs and bikinis in two colors: Onyx Black and Undyed, the natural color of cotton with no dye at all. Every batch goes through a quality audit before leaving the workshop in Peru.
Wondering what else to look for? Read Is Your Underwear Non-Toxic? We Checked 10 Popular Brands.
Frequently Asked Questions
Is pima cotton better than regular cotton?
Yes, in softness and durability, because of its fiber length. It's more expensive for the same reason.
Are Supima and pima the same?
They're the same species. Supima is the trademark for pima grown in the US and verified by the Supima Association.
Pima or Egyptian cotton?
In fiber quality they're comparable. Pima has less history of fraud; buy Egyptian only with the official logo.
Does pima cotton pill?
Much less than regular cotton, because the long fiber leaves fewer loose ends in the yarn.
Sources
All sources accessed October 29, 2026.
- Key Insights: What You Need to Know about Pima Cotton Fabric (Fibre2Fashion)
- What Is Supima Cotton? A Guide to America's Luxury Fiber (Naturepedic)
- Welspun scandal follows years of falling Egyptian cotton output (Business Standard / Reuters, August 2016)
- Cropping up: The return of Egyptian cotton to world markets (Oxford Business Group, 2018)
