If you’ve shopped for bedding, you’ve probably seen thread count everywhere. GSM? Not so much. But here’s the truth:

GSM usually matters more than thread count.

Let’s break down why.

What Is GSM?

GSM stands for grams per square meter. It tells you how heavy and dense the fabric is.

• Higher GSM = thicker, heavier fabric

• Lower GSM = lighter, more breathable fabric

GSM gives you a real idea of how the bedding will feel and perform, especially for different seasons.

What Thread Count Actually Tells You

Thread count is the number of threads in one square inch of fabric. It can indicate smoothness—but only up to a point.

Once you go too high, thread count becomes:

• Easy to manipulate with multi-ply threads

• More about marketing than quality

• Less helpful for predicting comfort

A 300–400 thread count fabric can feel better than an “800 TC” one if the yarn quality is higher.

Why GSM Is Often More Reliable

GSM is harder to fake and more closely tied to real-world comfort.

• Want cool summer bedding? Go lower GSM

• Want warm, cozy winter bedding? Go higher GSM

• Want durability? GSM gives a clearer signal than thread count

Thread count won’t tell you how thick or breathable the fabric is. GSM will.

The Smart Way to Choose Bedding

Don’t pick one and ignore the other. Use them together.

Ideal combo for most people:

• Thread count: 300–400

• GSM:

  • 120–160 GSM for summer

  • 160–200 GSM for all-season

  • 200+ GSM for winter warmth

This combo gives you comfort without falling for hype.