Pima cotton is an extra-long-staple (ELS) fiber from the plant Gossypium barbadense, grown mainly in Peru and the American Southwest. Its longer fibers make yarn that's smoother, stronger and less prone to pilling than fabric made from standard upland cotton.

It comes from the Pima Native American people of Arizona, who helped the USDA grow early test crops of this variety on the Pima reservation in the early 1900s. The name honors the tribe — it isn't a place or a brand.

Supima is a trademark owned by the Supima organization, licensed only to yarn and fabric made from 100% American-grown pima cotton that meets strict quality and purity standards. It's a certification, not a separate plant variety.

Pima is the cotton variety itself, grown in Peru, Arizona, California, Texas and New Mexico. Supima is a licensed trademark that only American-grown pima meeting certain quality thresholds can carry — all Supima is pima, but not all pima is Supima.

No. Pima and Egyptian cotton are both extra-long-staple varieties of Gossypium barbadense, which is why they're compared so often, but they're grown in different regions — pima in Peru and the U.S., Egyptian cotton along Egypt's Nile Delta.

The differences mostly come down to growing region and verification. Genuine top-grade Egyptian cotton can have slightly longer fibers, but the label is also widely misused at retail. Pima carries the licensed Supima trademark when it's 100% U.S.-grown, making authenticity easier to confirm.

Neither fiber is automatically better. Quality depends more on staple length, spinning and finishing than on the region's name alone. A verified, well-constructed pima or Supima fabric will typically outperform an unverified Egyptian cotton product.

Both are extra-long-staple fibers with comparable strength when genuine. In practice, how the yarn is combed, spun and woven affects durability more than whether the raw fiber is labeled pima or Egyptian.

Mainly in Peru's coastal valleys and in irrigated regions of the U.S. Southwest, including California, Arizona, Texas and New Mexico.

Yes. Peru is one of the largest producers of pima cotton, and Peruvian pima is well-regarded for its fine, silky fibers, though it isn't eligible for the U.S.-only Supima trademark.

They're the same cotton variety, but American pima grown to Supima's standards can carry that trademark, while Peruvian pima — despite often being excellent quality — is marketed on its own regional reputation instead.

Not by default. Most commercial pima is grown conventionally, but certified organic pima cotton does exist and is grown without synthetic pesticides or fertilizers — worth specifying at the sourcing stage if it matters to your brand.

Yes. Pima is generally considered a premium cotton because its extra-long staple produces a smoother, stronger, less linty yarn than standard upland cotton, which is roughly 90% of the world's cotton supply.

Yes. The long, fine fibers mean fewer short ends poke through the yarn's surface, giving pima fabric a smooth, soft feel from the first wash rather than only after it's broken in.

Yes. Combed, evenly spun pima yarn creates an open, consistent fabric structure that lets air move through easily, which is one reason it's common in warm-weather T-shirts and lightweight sheets.

Raw pima cotton fiber itself isn't toxic. Skin-irritation concerns with a finished garment usually come from added dyes, finishes or fiber blends during manufacturing rather than the cotton fiber — look for OEKO-TEX or GOTS-certified processing if that's a priority.

Pima isn't shrink-proof, but its tighter, more consistent fiber structure typically shrinks less than lower-grade cotton when washed correctly — cold water and a low-heat or air dry help preserve size and softness.

Pima fiber typically runs about 1.3 to 1.5 inches long, compared to roughly 0.9 to 1.2 inches for standard upland cotton — the extra length is what earns it the extra-long-staple classification.

Pima and Supima cotton are common in premium T-shirts and knitwear, bed sheets, pillowcases, loungewear and baby clothing — anywhere a soft feel and durability against repeated washing matter most.

Yes. Pima's long fibers spin into fine, smooth yarn that weaves into sheeting with less lint and a silkier surface than sheets made from shorter-staple cotton, which is why it shows up often in higher thread-count bedding.

“Regular” usually means upland cotton, which has a shorter staple — around 0.9 to 1.2 inches — and makes up most of the world's cotton. Pima's longer staple produces a smoother, stronger, less pill-prone fabric, generally at a higher price point.

Combing is a finishing process — removing short fibers and impurities — that can be applied to any cotton, including pima, to make it smoother. Percale is a tight, matte weave structure, not a fiber type. Pima can be combed and woven into a percale, sateen or jersey structure depending on the end product.

Yes. Its softness and durability make pima a popular upgrade from standard cotton for premium T-shirts, especially for brands positioning a product above basic tees.

Pimatex is a commercial fabric name for cotton-rich blends — often cotton and polyester — built around pima fiber. It's used in workwear, uniforms and mid-market apparel where brands want a softer feel at a lower cost than 100% pima fabric.