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What is the most obscure fact you know?
(lemmy.world)
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this post was submitted on 15 Sep 2025
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What is GSM?
The thickness of the cloth
What does the acronyms stand for?
I misstated the definition a bit, although in real world terms a higher GSM does often manifest as a thicker cloth. GSM stands for grams per square meter. It measures how much fabric weighs in a given area. It is a weight rating, not a thickness rating.
Higher GSM means denser, heavier fabric. Lower GSM means lighter, more breathable fabric.
General guide:
120โ140 GSM = lightweight (summer sheets, thin shirts)
150โ170 GSM = medium weight (jersey sheets, linen duvet covers)
180โ250 GSM = heavier weight (flannel, winter bedding)
GSM helps compare feel and durability across materials, but thickness will vary by fiber type.
Thanks!
Grams per square metre
Americans probably want in trucks per square football field. Anything but metric.