Walk into any home store in Mumbai and you will see it printed in large type on every bedsheet box: 200 TC, 400 TC, 1,000 TC. Thread count has become shorthand for quality, and the assumption is simple — a higher number means a better sheet. The truth is less convenient. Thread count is one variable among several, it is routinely inflated, and beyond a certain point it can actually make a sheet worse for the Indian climate. This guide explains what the number measures, where the marketing bends it, and what to check instead.

What thread count actually measures

Thread count is the number of yarns woven into one square inch of fabric — the vertical warp threads plus the horizontal weft threads added together. A genuine 300 TC percale, for instance, might have roughly 150 warp and 150 weft yarns per square inch.

There is a physical ceiling here. A square inch can only hold so many threads of a given thickness. With fine single-ply yarns, honest weaving tops out somewhere between 400 and 600 threads per square inch. Numbers far above that are achieved through arithmetic, not weaving.

The multi-ply trick

The most common inflation works like this. A yarn can be spun from two or three thinner strands twisted together — two-ply or three-ply yarn. Some manufacturers count each strand separately, so a sheet with 250 two-ply yarns per square inch is labelled 500 TC, and a three-ply version becomes 750 TC.

The problem is that multi-ply yarns are usually made from shorter, weaker cotton fibres that need twisting together to hold up at all. So a "1,000 TC" sheet built from three-ply yarn is often coarser, heavier and less durable than an honest 300 TC sheet woven from fine single-ply cotton. The big number on the box can signal a lower-quality fabric, not a higher one.

A useful rule: be most confident between 200 and 400 TC, ask questions between 400 and 600, and be openly sceptical above 600.

Why very high counts struggle in India

Even an honestly woven high-count sheet is a dense sheet, and density matters in a country where the bedroom is humid for four months and fan-cooled for most of the rest.

Breathability. Tightly packed threads trap air and slow evaporation. On a sticky September night in a 2BHK with the fan on full, a dense 800 TC sateen will feel warmer and clammier than a crisp 300 TC percale.

Drying time. Indian sheets are washed often. A dense sheet holds more water and takes longer to dry on a balcony rack in the monsoon, which invites mustiness.

Hard water. Much of urban India washes in hard water, which gradually stiffens fabric. A fine, breathable weave survives this better than a heavy one.

For most Indian bedrooms, 200 to 400 TC in good cotton is not a compromise. It is the correct answer.

What matters more than the number

Four factors influence how a sheet feels and lasts far more than thread count does.

Fibre quality. Long-staple cotton — Indian Suvin, Giza from Egypt, or good Supima — spins into finer, stronger, smoother yarn. A 300 TC sheet in long-staple cotton will outperform a 600 TC sheet in ordinary cotton on every measure that matters.

Weave. Percale is a simple one-over-one-under weave: crisp, matte, cool to the touch — the hotel-sheet feel, and the better choice for Indian summers. Sateen floats threads over the surface for a silkier, slightly warmer drape that suits air-conditioned bedrooms.

Finish. Quality mills singe and mercerise the fabric, which adds lustre and strength. Cheaper sheets rely on chemical softeners that wash out in three or four cycles — which is why a sheet that felt lovely in the shop turns rough by the second month.

Construction. Deep fitted-sheet pockets with all-round elastic, even hems and tight stitching tell you whether the maker expected the sheet to survive years of weekly washing.

SOISU's bedding is curated from mills that work with long-staple cotton at honest counts, checked at our Prabhadevi studio in Mumbai — and every set is photographed at quality check before it ships, because a sheet's evenness of weave is visible in a way a number on a box is not.

How to read a label like a professional

When you next pick up a bedsheet box, run through this sequence: look for the words single-ply or single yarn (their absence on a 600+ TC sheet is telling); check for a cotton variety or staple-length claim rather than just "100% cotton"; identify the weave, choosing percale for fan-cooled rooms and sateen for air-conditioned ones; and treat any count above 600 as a marketing decision rather than a weaving achievement.

The short version

Thread count is a measure, not a verdict. For an Indian bedroom, the sweet spot is 200 to 400 TC in single-ply, long-staple cotton — percale if you sleep under a fan, sateen if you sleep in air-conditioning. Spend your attention on fibre, weave and finish rather than the largest number on the shelf, and your sheets will feel better in June and still be in service three monsoons from now.