If you've ever compared two towels that look almost identical but feel completely different, the answer usually isn't the weave or the weight — it's the cotton itself. "Supima," "Pima," "Egyptian" and "Turkish cotton" get thrown around a lot in product descriptions, often without much explanation. Here's what they actually mean, in plain terms.
It Mostly Comes Down to Fiber Length
Almost every real difference between cotton types starts with one number: how long each individual fiber is, called the "staple length." Picture a rope made from a few long strands versus one made from a hundred short, frayed ones — the long-strand rope is smoother, stronger, and less likely to shed fuzz. Cotton yarn works the same way. Longer fibers need fewer joins when they're spun into thread, which is what makes premium cotton feel smoother, hold its shape longer, and pill less.
Ordinary cotton (called "upland" cotton, which makes up around 97–98% of the world's supply) has fibers around 1–1.1 inches long. Everything below is considered "extra-long staple," or ELS — the premium tier.
Egyptian Giza Cotton
Grown in Egypt's Nile Delta, Giza cotton is generally the longest and finest fiber of the group — the best grades, like Giza 45 and Giza 87, can run 1.5 to 2 inches. That extra length gives it a silky, lustrous finish that's especially prized in fine woven fabrics like dress shirting. It's also genuinely rare, making up less than 0.5% of world cotton production — which unfortunately means a lot of "Egyptian cotton" labels on the market aren't the real thing.
Supima & Pima Cotton
Pima is a fiber type — the same botanical species as Egyptian cotton — grown mainly in the US, Peru and Australia, with fibers around 1.35 to 1.6 inches. "Supima" is simply the certified, trademarked version: 100% American-grown Pima with traceability from farm to finished product. Because plain "Pima" isn't a policed term, Supima is generally the safer, more verifiable choice when authenticity matters.
Turkish Cotton: Aegean vs Çukurova
Turkey grows cotton in three main regions, and quality varies between them. Aegean cotton (also known by its growing basin, Söke) is the country's premium grade — its fiber isn't the longest of the group, but it has an unusually good balance of lightness, softness and absorbency. That's exactly why it's the traditional cotton of choice for towels and bathrobes rather than bedding: Aegean-grown cotton towels are noticeably lighter, dry up to two to three times faster than denser alternatives, and — unlike most fabrics — actually get softer with every wash instead of wearing thin. Çukurova cotton, grown in the south around Adana, is a solid, reliable, everyday grade, but it doesn't match Aegean cotton's fineness and is generally used for more standard textiles.
So Which One Is "Best"?
Honestly, it depends what it's for. If you're buying a dress shirt, Egyptian Giza's silky finish is hard to beat. If you want a dependable, verified premium in a soft knit t-shirt, Supima is the safe bet. But if you're buying a towel or robe — which is where fast drying, light weight and everyday softness matter more than raw fiber length — Aegean Turkish cotton has a real, practical edge that the other three weren't specifically developed for.
| Cotton | Fiber Length | Known For | Best Suited To |
|---|---|---|---|
| Egyptian Giza | Longest (1.5–2.0 in.) | Silky luster, fineness | Fine woven shirting |
| Supima | Long (1.4–1.6 in.) | Certified, traceable, durable | Premium knitwear |
| Pima (uncertified) | Long (1.35–1.6 in.) | Similar to Supima, unverified | General premium textiles |
| Turkish Aegean | Medium–long | Lightweight, absorbent, fast-drying | Towels & bathrobes |
| Turkish Çukurova | Medium | Reliable, everyday grade | Standard home textiles |
General tendencies based on published fiber data — individual mills and finishing processes can still make a real difference within any grade.
Where Piatra Textile Fits In
We work with production partners in Denizli, in Turkey's Aegean growing region, and we produce towels, bathrobes and bathmats to the exact GSM, composition and finish each buyer asks for — nothing is made from stock, so if you want a blend, a different weave or a specific weight, that's simply part of the order. If you're sourcing and want to talk through which cotton and construction actually fits your product, get in touch — we're happy to walk through it.