What does GSM mean for clothing? The ultimate guide to fabric weight and quality
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Have you ever wondered why one hoodie sometimes feels so luxurious and heavy, while another appears thin and flimsy? The secret often lies in an overlooked value: GSM .
This abbreviation stands for "grams per square meter," the fabric weight of a material. GSM largely determines how dense and robust a fabric is and thus how high-quality a hoodie feels and how long it lasts. In this guide, we'll explain what GSM means and how you can use it to identify a truly premium-quality heavyweight hoodie .
Why a high GSM is crucial for basics
For basics like hoodies, which stand for warmth and comfort, a higher GSM is a real game-changer. Here are the four most important reasons:
The advantages of a high GSM:
- Durability & Robustness: Heavier fabrics are more resistant to wear and pilling. A high GSM value is a guarantee of a garment that will last for years. You can find out more in our quality standards .
- Shape stability & perfect drape: A high GSM gives the hoodie structure. The hood drapes beautifully and voluminously instead of hanging loosely, and the entire hoodie retains its shape even after many washes.
- Value & Feel: The substantial, heavy feel of a premium hoodie in your hand immediately conveys quality. It evokes a sense of luxury and comfort.
- Warmth & Insulation: Tightly woven fabrics trap more air and create a more effective insulation layer. Ideal for the changeable Swiss climate.
The GSM classes: Single-layer fabrics in comparison
To assess the quality of a hoodie, it's important to know the common GSM classes for single-layer fabrics . Most hoodies on the market fall into these categories:
Lightweight (~250 GSM)
Midweight (~400 GSM)
Heavyweight (800+ GSM)
| GSM class | Area | Area of application | Characteristics |
|---|---|---|---|
| Lightweight | 200-300 g/m² | Spring/Autumn, Sports | Lightweight, breathable, flexible |
| Midweight | 300-400 g/m² | Everyday hoodies, transitional period | Good compromise between warmth and weight |
| Heavyweight | 400-500 g/m² | Winter, premium streetwear | Warm, substantial, durable |
| Ultra-Heavyweight | 500+ g/m² | Extreme cold, alpine conditions | Maximum warmth, highest quality |
Most brand-name hoodies are in the lightweight to midweight range. True heavyweight hoodies with 400+ g/m² are rarer and usually found in the premium segment, like our single-layer "Everyday Essential" with 400 g/m².
Our innovation: The double-layer construction
While the table above describes the density of *individual fabric layers*, we take this innovative step further with our warmest models. Instead of using just one thicker fabric, we combine two full-fabric layers into a single hoodie. The result is unsurpassed quality.
"The Gradual" Hoodie: 2 x 400 g/m² = Effective 800 g/m²
"To the Matterhorn" Hoodie: 2 x 425 g/m² = Effective 850 g/m²
This method not only provides extreme warmth, often replacing a winter jacket, but also creates a stunning, structured silhouette. It's the ultimate form of a heavyweight hoodie, which you can read about in detail in our comparison of cheap vs. high-quality hoodies .
Conclusion: Pay attention to the inner values
In a fashion world often dominated by logos, it's worth taking a look at the inner qualities. GSM is one of them, a reliable indicator of a fabric's quality and durability. The next time you want to assess the quality of a hoodie, keep this guide in mind. Ask yourself: How heavy does the fabric feel and how is it constructed?
Ready to feel the difference? Discover our collection of heavyweight basics.
To the Heavyweight CollectionFrequently asked questions about GSM
What is a good GSM value for a high-quality hoodie?
For a high-quality, single-layer hoodie, a rating of 350 GSM or higher is a good standard. True heavyweight models start at 400 GSM. For ultimate warmth and luxury, there are double-layer constructions that effectively reach 800 GSM and more.
Does a high GSM hoodie really last longer?
Yes, absolutely. The denser fabric is more resistant to abrasion and pilling. A double-layer construction doubles this durability. With proper care, as described in our care instructions , you can maximize its lifespan.
Isn't an 800 GSM hoodie too heavy to wear?
An 800 GSM hoodie is heavyweight, but that's precisely what defines its quality. It feels substantial and luxurious, offering warmth that can often replace a jacket. It's perfect for chilly days and anyone who appreciates a sense of comfort and uncompromising quality.
