What is GSM? The most important fabric specification.

GSM — grams per square meter — is the single most useful specification on a garment spec sheet. It tells you the weight of the fabric, which in turn tells you how the garment will feel, hang, and wear.

A 180 GSM tee feels light, almost translucent. A 240 GSM tee — the weight we use for our standard organic tee — sits with body, drapes cleanly off the shoulder, and survives industrial laundry cycles.

Move into hoodies and crewnecks and the weights climb. 320 GSM gives you a midweight crewneck — substantial but not heavy. 400 GSM is a true heavyweight: the kind of hoodie that holds its shape for years.

Higher GSM doesn't always mean better. It means denser. The right specification depends on use: a summer festival tee should breathe; a winter merch hoodie should hold structure. We'll guide you to the right weight for the application.

Specifications worth asking your manufacturer for: GSM, fiber composition, knit construction (single jersey, French terry, loop-back terry), and yarn count. Together they tell the full story of how a garment will perform.