T-shirt fabric weight is how much fabric sits in a fixed area of the shirt, and buyers feel it as thickness, drape, warmth and how much a light colour lets show through. A lighter tee feels soft and fluid, a heavier tee feels sturdy and holds its shape, and your listing should say which one is coming so the package holds no surprises.
This guide is for print on demand sellers who put one design on several blanks and need to describe each blank honestly. Buyers cannot touch the shirt before they order, so your description does the job a fitting room does in a shop, and a gap between the words and the fabric is one of the easiest complaints to avoid.
What GSM and ounces actually measure
GSM means grams per square metre: weigh one square metre of the fabric and that is the figure. A higher number means more fabric in the same space, which usually reads as a thicker, more opaque shirt. US spec sheets tend to quote ounces instead, so the same shirt can carry two very different-looking numbers.
The Gildan 5000 shows this well. Gildan's US spec sheet calls it a "5.3-ounce, 100% US cotton" shirt, while Gildan's European sheet for the same style lists "180 G/SqM (White 175 G/SqM)". One blank, two units, and the white version weighs slightly less than the colours. When you compare shirts, compare them in one unit and from the brand's own sheet.
Weight is only part of what buyers feel
Two shirts with close weights can feel quite different, because the yarn matters as much as the grams. Combed, ring-spun cotton is smoother than plain carded cotton, and a finer yarn knits into a lighter, softer fabric. Bella+Canvas describes the 3001 as "100% Airlume combed and ring-spun cotton, 32 singles, 4.2 oz." Gildan's European sheet gives the 5000 a 20/1 yarn count, a thicker yarn, which is part of why it feels sturdier in the hand.
Finishing changes the feel too. Comfort Colors lists the 1717 as "6.1-ounce, 100% US ring spun cotton" with "Soft-washed, garment-dyed fabric", so it is heavy but already broken in. The same sheet says "Please allow for slight color variation in production and washing", a line worth passing on to your buyers.
What buyers notice, roughly in the order they notice it:
Opacity. A thin white or pale tee can show what is underneath. A heavier tee hides more.
Drape. Lighter tees fall close to the body. Heavier tees stand away from it and look more structured.
Warmth. A heavy tee is warmer, which buyers in hot climates notice on the first wear.
Perceived quality. Many buyers read thickness as quality, even when a lighter premium tee is just as well made.
How the print feels. One print provider describes a DTF print as "A thin, smooth layer you can feel sitting on top of the fabric".
Four common blanks side by side
| Blank | Weight on the brand's sheet | Fabric | Fit and build | How to describe it |
|---|---|---|---|---|
| Bella+Canvas 3001 | 4.2 oz | Combed, ring-spun cotton, 32 singles | Side-seamed, shoulder taping, unisex XS to 5XL | Lightweight, soft, drapes close to the body |
| Gildan 64000 | 4.5 ounces | Ring-spun cotton | Modern classic fit, no side seams | Lightweight, soft, easy everyday fit |
| Gildan 5000 | 5.3 ounces (180 GSM on the European sheet) | Cotton | Classic fit, no side seams, taped neck and shoulders | Midweight, sturdy, holds its shape |
| Comfort Colors 1717 | 6.1 ounces | Ring-spun cotton, garment-dyed | Relaxed fit, no side seams | Heavyweight, thick, soft-washed, relaxed |
The Gildan 64000 figures come from its US spec sheet, the others from the sheets linked above. The US sheets give ounces without naming the area they refer to, so use the ounce figures to rank the shirts from light to heavy rather than to convert them to GSM.
Heathers and blends change the label
"100% cotton" is not true for every colour of a cotton shirt. Gildan's US sheet for the 5000 lists "99/1 cotton/polyester (Ash)", "90/10 cotton/polyester" for Sport Grey and the Antique colours, and "50/50 cotton/polyester" for heathers such as Dark Heather and Graphite Heather. The 64000 sheet lists "65/35 polyester/ring spun cotton" for many heathers, including Heather Navy. Bella+Canvas lists the 3001 in Ash as 99% cotton and 1% polyester and sells its other heathers as a separate style, the 3001CVC.
If your listing offers Sport Grey or a heather, say so: "100% cotton, heather colours are cotton and polyester blends" is short and true. Etsy removed the separate Materials tag field in March 2026, so materials now live only as an attribute (Etsy's listing updates). That attribute and your description are where a careful buyer checks. For how the fibres themselves compare, see our guide to cotton, polyester and tri-blend shirts.
How to describe weight in your listing
Etsy's listing guide says: "Describe the details of your item so buyers know what they're getting." Its SEO guide adds: "Clearly describe your item in the first sentence of your description." For a tee, the feel of the blank belongs near the top, not in a footnote.
Name the weight class in plain words: lightweight, midweight or heavyweight.
Give the brand's figure with its unit, for example "5.3 oz on Gildan's spec sheet".
Say what it is like to wear: soft and fluid, or thick and structured.
Name the fit from the brand's sheet: classic, modern classic or relaxed.
Call out the exceptions: heather blends and garment-dyed colour variation.
Set the material attribute so it matches the description.
Skip vague praise. Etsy's title advice reads "Avoid repetition as well as subjective words", and "premium" or "perfect" tells a buyer nothing about weight. Accuracy also protects you: Etsy Purchase Protection lists "The item doesn't match the listing description" among the cases it does not cover. Our guide to writing an Etsy description buyers actually read covers the rest of the page. If you are still choosing between blanks, Gildan 5000 vs Bella+Canvas 3001 and Comfort Colors 1717 vs Bella+Canvas 3001 compare them in more depth.
How Alomations handles blanks and fabric claims
The Alomations catalog carries the blanks in this guide and more: Gildan 5000, 64000, 18000, 18500 and 5400, Bella+Canvas 3001 and 6400, and Comfort Colors 1717 and 1566, along with women's, youth, toddler and baby sizes. Each product has its own page with a "from" price, so you can weigh a lightweight and a heavyweight option before you build a template. Apparel is printed with DTF, and production for US orders is in the US.
When a run writes your listing, the fabric claims in the copy match the materials set in your template, a long-sleeve shirt is never called a tee, and Etsy's listing attributes are filled from the product. The description and the attribute end up saying the same thing about what arrives. The features page shows the rest of the listing run.
Frequently asked questions
What counts as a heavyweight t-shirt?
Brands use "heavyweight" loosely, so compare spec-sheet figures rather than labels. On the brands' own sheets, the Bella+Canvas 3001 is 4.2 oz, the Gildan 5000 is 5.3 ounces (180 GSM on Gildan's European sheet) and the Comfort Colors 1717 is 6.1 ounces.
Is a heavier t-shirt better quality?
Not automatically. Heavier means thicker, warmer and more opaque. A lighter shirt made from finer combed, ring-spun yarn can feel softer and more refined, so the better shirt is the one that matches what your buyer wants to wear.
Should fabric weight go in the title?
Usually not. Etsy suggests titles of less than 15 words that describe the item, so put the weight in the description and attributes. The exception is when weight is the point of the product, as with a tee sold as a heavyweight shirt.
Why does the same shirt show two weights?
US spec sheets usually quote ounces and European sheets quote grams per square metre. White can also weigh a little less than the colours, as Gildan's European sheet shows for the 5000.
You can compare these blanks and build your first tee listing on the Alomations free plan, with no card needed.