What does GSM mean in clothing? Why HTT BLANKS chooses heavyweight streetwear
Deel

Why does one T-shirt feel light and smooth, while another hoodie immediately feels heavy and structured? An important part of the answer lies in three letters: GSM. At HTT BLANKS, we don't use fabric weight as an isolated marketing figure, but as part of the fit, appearance, and function of every garment.
What does GSM mean in clothing?
GSM stands for grams per square metre: the number of grams that one square metre of fabric weighs. So it says something about the fabric weight, not the total weight of a finished garment. Among comparable materials and constructions, a higher GSM generally means a heavier, denser fabric with more body.
Important: a higher GSM does not automatically mean better quality. Fibre quality, material, knit or weave construction, finishing, and fit all matter. That's why at HTT BLANKS we don't look only at a high number, but at the combination of weight, cotton, construction, and silhouette.
Why heavyweight works so well for streetwear
Heavyweight fabric has more presence. Especially with oversized and boxy fits, extra fabric weight helps the garment fall less loosely and gives it more structure. That's exactly why GSM is so important to the look of modern streetwear: the fabric becomes part of the design.

Why HTT BLANKS?
Nothing Added. Nothing Needed. HTT BLANKS is built around the idea that a garment doesn't need a large graphic to be strong. The focus is on what remains when you remove the print: material, weight, fit, texture, colour, and construction.
That's why the line consists of different weights. Not every garment needs to be 440GSM. A T-shirt serves a different function than a winter hoodie. We choose the weight that suits the silhouette we want to achieve.
The HTT BLANKS collection: from 280 to 440GSM
HTT BLANKS Boxy T-Shirt - 280GSM
Our 280GSM Boxy T-Shirt forms the foundation of the collection. For a T-shirt, 280GSM is a substantial weight. Combined with the relaxed boxy fit, it gives the tee more body and a distinctive streetwear silhouette.
HTT BLANKS Heavyweight Turtleneck Hoodie - 380GSM
The 380GSM Turtleneck Hoodie combines 100% cotton with an oversized fit, high turtleneck construction, dropped shoulders, thumbholes, and a split hem.
HTT BLANKS 440GSM Sun Faded Heavyweight Hoodie
For maximum body within the current BLANKS line, there's the 440GSM Sun Faded Heavyweight Hoodie. The combination of 100% cotton, an oversized silhouette, and 440GSM fabric makes this a distinctive heavyweight essential.
HTT BLANKS 440GSM Heavyweight Crewneck - Washed Black
The latest addition is the 440GSM Heavyweight Crewneck. A washed-black crewneck made from 100% combed cotton with dropped shoulders and an oversized unisex fit. The heavy fabric gives the sweater a firm, structured drape.
280, 380, or 440GSM: what suits you?
| HTT BLANKS item | Fabric weight | Character |
|---|---|---|
| Boxy T-Shirt | 280GSM | Heavyweight tee, boxy and structured |
| Turtleneck Hoodie | 380GSM | Heavyweight, oversized, and distinctive |
| Sun Faded Hoodie | 440GSM | Extra heavy, lots of body, and oversized |
| Washed Black Crewneck | 440GSM | Extra heavy, clean, and structured |
Is 440GSM automatically better than 380GSM?
No. GSM is a measurement, not a quality score. 440GSM means that the fabric weighs more per square metre than 380GSM; it doesn't automatically mean that every 440GSM garment is better. The right weight depends on the design, season, material, and how the garment should drape.
The philosophy behind HTT BLANKS
Streetwear doesn't always have to shout louder. Sometimes quality lies precisely in what you leave out. That's why HTT BLANKS chooses understated designs in which the silhouette takes centre stage. Heavyweight cotton, washed and faded finishes, oversized fits, and functional details together form the identity of the collection.
No unnecessary graphics. No distractions. Weight, shape, and material.
Explore the HTT BLANKS collection and choose the weight and silhouette that suit your style.
Frequently asked questions about GSM
What does 440GSM mean?
440GSM means that one square metre of the fabric used weighs 440 grams. For sweatshirts and hoodies, this is a very heavy fabric weight that can provide a lot of body.
Is 280GSM heavy for a T-shirt?
Yes. For a T-shirt, 280GSM is a distinctly heavyweight weight and is ideal for a substantial boxy streetwear look.
Is a higher GSM always warmer?
Not necessarily. Weight plays a role, but the material, knit structure, and finishing also determine how warm and breathable a garment feels.
Why does HTT Streetwear mention GSM?
Because fabric weight is a concrete product specification. We want to make clear why different BLANKS garments feel and drape differently, rather than using only general terms such as “premium” or “heavyweight.”