GSM means grams per square metre. It is a simple measure of fabric weight, but it changes more than the number on a specification sheet: it affects drape, structure, layering and how a garment feels on the body.
120 g/m²: light and easy
Our Essential T-shirt uses 120 g/m² organic cotton Flamê. It has a light hand, a soft surface and an easy drape. This is the weight we reach for when we want a T-shirt to feel breathable and relaxed rather than structured.
It works particularly well for everyday wear in warmer weather and under heavier layers.
220 g/m²: more structure
Our Heavyweight T-shirts use 220 g/m² organic cotton jersey. The extra weight gives the garment more presence and a more defined fall. It still has a relaxed fit, but the silhouette holds itself differently.
We also use 220 g/m² cotton in several long-sleeve and striped styles, where the additional substance makes sense for layering and cooler days.
Heavier is not automatically better
A higher GSM does not mean higher quality by itself. The better choice depends on what the garment is meant to do. A light T-shirt can be exactly right when softness and breathability matter; a heavier jersey can be better when you want more structure and weight.
How to choose
If you want the lightest everyday option, start with our Essentials. If you prefer a denser hand, explore the T-shirt collection for Heavyweight styles. For cooler weather, our long sleeves add coverage without losing the relaxed +351 shape.
