What 400gsm Actually Means: A Simple Guide to Hoodie Weight

If you've ever compared hoodies online, you've probably come across GSM. It stands for grams per square metre and describes the weight of a fabric. In simple terms, a higher GSM generally means a heavier fabric, although the fibre, knit and finish all affect how it feels.

What does 400gsm feel like?

A 400gsm hoodie sits in the heavyweight end of everyday sweatshirt fabrics. It can feel more substantial and hold its shape differently from a lightweight layer. Add a fleece finish and it can bring that soft, cosy feel people look for when the weather cools down.

Does heavier always mean better?

Not necessarily. Lightweight hoodies can be great for layering and warmer weather, while heavyweight options are often chosen for structure and a more substantial feel. The right choice depends on when and how you plan to wear it.

Look beyond the number

GSM is useful, but it isn't the whole story. Check the fibre content, construction, fit and care instructions too. Cotton, added fleece, a double-lined hood and the overall cut all contribute to how a hoodie feels and wears.

Our approach

The Sundaze Society's heavyweight hoodies are made from 400gsm, 100% cotton with added fleece and a double-lined hood. They're designed for a relaxed everyday fit and a cosy, substantial feel.

In short: GSM helps you compare fabric weight, but the best hoodie is the one that feels right for your everyday.