Why Thread Count is a Myth

Two sets of sheets. One says 400 thread count. The other says 1,000. Logic suggests the higher number must be better. It often is not.

Thread count is one of the most familiar numbers in bedding, and one of the least useful on its own. It sounds precise, but it tells you very little about how a sheet will feel, how it will sleep, or how it will wear. This guide explains what thread count measures, why a higher number is not always better, and what to look at instead.

What thread count actually measures

Thread count is the number of threads woven into one square inch of fabric, counting both directions of the weave. It describes how densely a fabric is woven. It says nothing about the quality of the threads themselves, and that is the part that matters most.

Why higher is not always better

How very high numbers are reached

Very high thread counts are often reached by twisting several fine strands into one yarn and counting each strand separately. The label looks impressive, but the fabric is not necessarily any better. It can simply be heavier and more tightly packed.

Density and breathability

Fabric breathes through the small gaps in the weave. A very dense weave lets less air through, so it can feel heavier and warmer. For anyone who sleeps warm, a sheet chosen for its high number can end up working against them.

What to look at instead

The fibre

Long, smooth fibres make smoother, stronger yarn. Short, uneven fibres are more likely to pill and roughen with washing. You feel the quality of the raw material more than the density of the weave.

The weave

Percale is a simple one-over, one-under weave that feels crisp and matte. Sateen floats more thread on the surface for a smoother, slightly heavier drape. The weave shapes how a sheet feels and how warm or cool it sleeps.

The fabric itself

Cotton, linen, bamboo viscose and lyocell all behave differently. Some absorb moisture and hold it, others move it away from the skin. Some soften with washing, others roughen. A thread count tells you none of this.

Why we do not lead with thread count

The Sheets are made from 100% eucalyptus lyocell. We describe them by what the fabric does, because that is what you will feel:

• The structure of the fibre carries heat away from the body.
• It moves moisture away from the skin, so the bed stays drier.
• It has a smooth, fluid drape and gets softer with every wash.
• It is OEKO-TEX Standard 100 certified, with no cooling treatments applied.

Better questions to ask

• What is the fabric actually made from, and is it 100% one fibre or a blend?
• Does it breathe and move moisture away from the skin, or hold it?
• How does it change with washing?
• Is it independently certified, for example to OEKO-TEX Standard 100?
• Is there a trial period, so you can judge it on your own bed?

If you sleep warm, our guide to why you feel so hot at night covers the rest of the bed and the bedroom.

Questions Dreamers ask

Does thread count matter?

It tells you how densely a fabric is woven, which is part of the picture. The fibre, the weave and the fabric type tell you far more about how a sheet will feel, sleep and wear.

Why can very high thread count sheets feel worse?

Very high counts are often reached by twisting several fine strands into one yarn and counting each strand. The result can be a heavier, more tightly packed fabric that lets less air through.

What should I look for instead of thread count?

The fibre, the weave and the fabric type. Then check how it handles moisture, how it changes with washing, and whether it is independently certified.

Do eucalyptus sheets have a thread count?

Any woven fabric has a thread count. We do not lead with ours, because what makes eucalyptus lyocell comfortable comes from the fibre itself: it carries heat away from the body, moves moisture away from the skin and gets softer with every wash.

Are more expensive sheets always better?

Not automatically. It is more useful to know what to look for: the fibre, the weave, independent certification and a trial period, than to use price as a shortcut.

Read next: eucalyptus lyocell bedding