What is a heavyweight hoodie? 380 GSM vs 350 GSM explained

"Heavyweight" gets used a lot. Here is what it actually means, and how to choose between the two weights we make.

What GSM means

GSM stands for grams per square meter. It measures how much a fabric weighs over a fixed area, so a higher number means thicker, denser cloth. In a hoodie, a higher GSM generally means more structure, more warmth, and a heavier drape.

Our two weights

• 380 GSM heavyweight (85% cotton, 15% polyester): structured and substantial, with a clean drape that holds its shape wash after wash. This is the one for a boxy, premium look.
• 350 GSM fleece (42% cotton, 53% polyester, 5% other fibers): thick with a soft fleece interior and a little stretch. This is the one for cozy, loose, all-day comfort.

Which should you pick?

Pick the 380 GSM heavyweight if you want structure and a hoodie that looks sharp over a tee. Pick the 350 GSM fleece if you want the softest feel and a relaxed, slouchy fit. Both are cut oversized with drop shoulders, so you can size to your normal size for the intended look.

How to tell if a hoodie is really heavyweight

• Check that the listing states the GSM or ounce weight, not just the word heavyweight.
• Look at the cuffs and hem: thick ribbing that springs back is a good sign.
• Hold it up to the light: dense fabric should not look thin or see-through.

Shop the weights

See every style in our graphic hoodies collection. Start with the Reject Normal 380 GSM heavyweight hoodie or the Scorpion 350 GSM fleece hoodie. US orders ship free, and you get a free size exchange if it does not fit.