Thread count — the number of threads woven into one square inch of fabric — became shorthand for “quality” somewhere along the way, and manufacturers noticed. The result is a market full of 800 and 1000 thread-count sheets that feel worse than a well-made 300-count percale, because the number alone doesn’t tell you how it was reached.
Here’s the trick some brands use: a single strand of yarn can be twisted from two, three, even six finer threads (called “ply”), and each of those plies gets counted separately toward the total. Twist six thin, weak threads together into one yarn and you can claim a thread count several times higher than a sheet woven from single, high-quality long-staple cotton threads — without any real gain in softness, breathability or durability. Often the opposite.
For cotton, the sweet spot most textile experts point to is roughly 200–400 thread count, woven from single-ply, long-staple (or extra-long-staple) cotton yarn. Above that range, the returns diminish fast and the risk of inflated multi-ply counts goes up.
So what should you actually check? Fibre type first — long-staple cotton, linen, or a linen-cotton blend, named explicitly, not just “premium cotton.” Weave second — percale for a crisp, breathable finish, sateen for a softer drape. Thread count last, as a sanity check within a sensible range, not the headline number to chase.
Every bedsheet in our Bedsheets & Linen collection lists its actual fibre and weave for exactly this reason — so you’re choosing based on how it will feel and wear, not a number designed to look impressive on a listing page.