What 260 GSM Actually Means for a T-Shirt

Go and look at ten t-shirt product pages in India right now. Count how many print the fabric weight.

It will be one or two. Everyone else lists the colour, the fit, the wash instructions, and then goes quiet, because GSM is the number that tells you whether the shirt is any good, and most of them would rather you did not know it.

Here is the whole thing explained, including our own numbers.

What GSM actually means

GSM stands for grams per square meter. Take one square meter of the fabric, put it on a scale, and whatever it weighs in grams is the GSM. That is it. There is no marketing in it. It is a measurement.

More grams means more cotton in the same space, which means a denser knit. Density is what decides whether a tee drapes or clings, holds its shape or goes shapeless, stays opaque or turns see-through by the tenth wash.

The weight ladder

Our oversized graphic tees sit at 260 GSM. Our acid washed cloud pieces are 240 GSM. Our hoodies are 400 GSM.

The tee you are most likely wearing right now is somewhere around 160 to 180.

What the difference feels like

Pick up a 260 GSM tee and the first thing you notice is that it has weight. Not heavy like a jacket. It just does not feel like nothing.

Then the specifics:

• It hangs instead of clinging. A light tee follows the shape of whatever is under it. A heavy one falls away from the body, which is the entire reason an oversized cut looks intentional rather than baggy.
• The shoulder seam stays where it was sewn. Light fabric stretches at the shoulder and neck within a few wears, and once that goes, the fit never comes back.
• It stays opaque. The see through problem on light tees is not a dye issue. There is simply not enough yarn in the fabric.
• The print sits better. A denser surface holds ink flatter and truer. On thin fabric the ink sinks and spreads, which is why cheap prints look slightly fuzzy from day one.
• The hem does not curl. Weight keeps the bottom edge sitting flat instead of rolling up on itself.

Why most brands stop at 180

Cost, and nothing else.

A 260 GSM tee uses roughly 50 percent more cotton than a 175 GSM one. That cotton has to be bought, knitted, dyed, cut and shipped, and every one of those steps is priced by weight. A brand selling at a fixed price point protects its margin by taking fabric out, because fabric is the one place a customer cannot see the cut until they have already paid.

The garment still photographs fine. That is the part that makes it work. Weight does not show up in a product photo. It only shows up in your hands, and then again around wash ten, by which point the sale is long done.

Terry knit, not single jersey

Weight on its own is not the whole story. The knit matters too.

Most tees are single jersey, a thin single layer knit. Ours are a 90/10 cotton polyester terry knit. Terry has loops built into the back of the fabric, which is what gives it body and that slightly brushed inside face. The 10 percent polyester is deliberate: it is what stops a heavy knit from sagging out of shape over a long day and a long life.

The acid washed pieces are different on purpose. Those are 100 percent cotton at 240 GSM, because the acid wash process needs pure cotton to bite into. That is where the fade pattern comes from, and it is why no two of those pieces come out identical.

Does heavyweight make sense in Indian heat

Fair question, and the honest answer is that it depends on the cut.

A heavyweight tee in a slim fit would be miserable in May. A heavyweight tee in a true oversized cut is a different garment. The fabric is not touching most of you. It sits away from the body, air moves underneath it, and the drape does the work. That is why the weight and the oversized fit have to be designed together, and why sizing up a regular tee is not the same thing.

Ours are cut wide with dropped shoulders, XS through XL, unisex.

How to check whether a brand is telling the truth

You cannot weigh a shirt through a screen, so use these instead.

1. Is the number printed at all? A brand that built heavy will tell you, in the description, without being asked. Silence is the answer.
2. Is the knit named? "100 percent cotton" is not a spec. Single jersey, terry knit, french terry, loopback: a brand that knows its fabric names it.
3. Does the price make sense? A genuine 260 GSM oversized tee under about 500 rupees is very unlikely. The cotton alone does not allow it.
4. Check the reviews for the tenth wash, not the first. Everything looks good on arrival. Look for people describing the shirt after months.
5. Watch for weight talk without a number. "Premium heavyweight feel" is copywriting. "260 GSM" is a claim someone can hold you to.

What we print, and where

Every Heistt product page carries the fabric, the GSM, the fit, the sizes and the care instructions. Not in a tab you have to hunt for. In the description, in plain text, because it is the part of the product we would want to read first.

If we ever change a fabric, the number on the page changes with it.

Making it last

Heavy fabric buys you years, but only if you do not fight it.

1. Machine wash cold. Heat is what shrinks cotton and cracks prints.
2. Turn it inside out. The print never touches the drum.
3. Tumble dry low, or better, dry it flat in shade. Direct sun fades black faster than washing does.
4. No bleach, ever.
5. Wash it less. Airing a tee overnight handles more than people expect.

The short version

GSM is the one number that separates a tee you will still be wearing in three years from one you will quietly stop reaching for. It costs brands money to get it right, and it costs them nothing to stay quiet about it.

Ours is 260. Now you can go and ask everyone else what theirs is.

Heistt

One more thing worth knowing. These fabric specs hold across our permanent range, and that range stays. Drops are the exception: a drop runs for thirty days and then closes forever, the way AURA did. The product page always tells you which one you are looking at.

Keep reading

• What Heistt Is. And How It Works.
• What Is 400 GSM Fabric, and Why It Makes the Best Hoodies
• Why Graphic Tees Are the Foundation of Every Streetwear Wardrobe

See it in person: Oversized Tees at 260 GSM or Acid Washed Cloud Tees at 240 GSM.