Autumn arrived in Groningen the way it always does: not with a date on the calendar, but with one morning where the bike ride to town is suddenly ten degrees colder than it was last week. That is the moment the hoodie question comes back. Not which hoodie, but how heavy a hoodie you actually need.
Almost every hoodie listing in the world quietly mentions a number followed by the letters GSM. Most people scroll past it. It is, honestly, the single most useful number on the page.
What does GSM mean on a hoodie?
GSM stands for grams per square metre. It is the weight of one square metre of the fabric, and it tells you how dense and substantial a garment feels. A higher GSM means a thicker, warmer, more structured piece. A lower GSM means a lighter, softer, more drapey one.
It is not a quality score. A well made 280 GSM hoodie beats a badly made 450 GSM one every day of the week. GSM tells you what a garment is for, not how good it is.
The three weight classes, and what they feel like
Lightweight: roughly 240 to 300 GSM
Thin, soft, close to a heavy t-shirt with a hood attached. This is the hoodie you wear indoors, in spring, or as a layer under a jacket. It packs small, it dries fast, and it will not keep you warm on its own once the temperature drops below ten degrees.
Midweight: roughly 300 to 380 GSM
The everyday range, and where most good streetwear hoodies live. Warm enough for a Dutch autumn day on its own, thin enough to wear under a coat in December without feeling like you are wearing armour. If you only own one hoodie, this is the weight to own.
Heavyweight: 400 GSM and up
Thick, structured, and built to hold its shape rather than cling to yours. Heavyweight hoodies have that boxy drop shoulder silhouette people associate with premium streetwear. They take longer to dry, they cost more to make, and they last for years. Winter piece, first and foremost.
Which weight do you need for autumn in the Netherlands?
For the Dutch shoulder season, roughly September through November, midweight is the honest answer. The Dutch autumn is not extreme cold. It is wind, drizzle, and a fifteen degree swing between the morning commute and the walk home. A midweight hoodie under a shell jacket covers almost all of it, and you are not carrying a heavyweight around on the mild afternoons.
The layering logic is simple:
- Mild and dry: a graphic tee on its own, hoodie in the bag.
- Cool and grey: tee plus a midweight hoodie, or a crewneck sweatshirt if you want a cleaner line under a coat.
- Cold and wet: hoodie plus a shell, and a beanie that actually covers your ears. The Zieck Beanie was made for exactly the October to April stretch.
Why fabric weight changes how a print looks
This is the part most guides skip. Fabric weight does not just change warmth, it changes the graphic.
Heavier cotton has a flatter, denser surface, so a print sits crisply on top of it and the edges stay sharp. Lighter, softer fabrics have more stretch and more movement, so the same artwork reads a little softer and moves more with the body. Neither is wrong. It is the difference between a poster on a wall and a poster on a flag.
It is also why the same Zieck design can feel like two different pieces across two garments. The Peeling Paint print, built around weathered layers and edges that do not quite line up, reads differently on a structured hoodie than it does on a soft tee. The Logo Only wordmark, which is all about clean geometry, tends to want the flatter surface.
Every Zieck piece is printed on demand in Europe, one garment at a time, so the exact blank and its specs are listed on each product page. Check there before you buy rather than assuming every hoodie in a shop is the same weight. They rarely are.
How to keep a heavier hoodie looking new
Heavier garments hold more water, which means more mechanical stress in the machine and more heat in the dryer. The rules are the same as for any printed piece, just more important the heavier you go: wash cold, turn it inside out, skip the tumble dryer, and dry flat so the shoulders do not stretch. We went through the full routine in our care guide.
Frequently asked questions
Is a higher GSM hoodie always better?
No. Higher GSM means warmer and more structured, not better made. A 300 GSM hoodie with good cotton, tight stitching and a quality print will outlast a cheap 450 GSM one. Choose the weight that matches the season you will actually wear it in.
What GSM is considered a heavyweight hoodie?
Anything from roughly 400 GSM upward is generally sold as heavyweight. The 300 to 380 GSM band is midweight, and 240 to 300 GSM is lightweight. There is no official standard, so the boundaries shift slightly between brands.
Can you wear a heavyweight hoodie under a jacket?
You can, but it is a tight fit under most coats and it kills the drape of a tailored one. If layering under outerwear is your main use case, a midweight hoodie or a crewneck sweatshirt sits far better.
Does washing shrink a heavy cotton hoodie?
Cotton shrinks with heat, not with water, and heavier cotton has more fibre to lose. Washing cold and air drying keeps shrinkage to almost nothing. A hot wash followed by a hot dryer cycle is what costs you a size.
What is the best hoodie weight for autumn?
Midweight, roughly 300 to 380 GSM. It is warm enough to wear alone on a grey autumn day and thin enough to layer under a coat once winter arrives, which makes it the most useful single hoodie for the Dutch climate.
Pick the weight, then pick the story
Once you know which weight you are shopping for, the fun part is choosing what it says. That is the part we spend our time on. Every Zieck graphic comes out of a specific memory, from a childhood mix-up in Papiamentu to a peeling window frame in a Groningen living room.
Start with the weight that fits your autumn, then browse the full range at the Zieck shop. If you want the styling side of it, five ways to style an oversized hoodie is a good next read.
