Heavyweight T-Shirts: What Makes a Tee Heavyweight

A heavyweight t-shirt feels different the second you pick it up. Thicker cotton, more structure, a collar that holds its shape. Here is what the label actually means.

It comes down to gsm

Fabric weight is measured in grams per square meter (gsm) or ounces per square yard. Divide gsm by about 33.9 to get ounces: 250 gsm is about 7.4 oz.

Rough weight bands for tees

There is no official standard, but these bands are common:

• Under 180 gsm: lightweight. The thin tee from a multipack.
• 180 to 220 gsm: midweight. Most everyday tees.
• 220 gsm and up: heavyweight. Thick enough that it does not cling.
• 300 gsm and up: super heavyweight. Close to sweatshirt territory.

What the weight changes

• Drape: a heavy tee falls straight and keeps a boxy shape instead of clinging.
• Opacity: thicker cotton is harder to see through, even in light colors.
• Feel: it feels substantial, and a big back print sits on a solid base.
• Trade-off: more cotton is warmer, so a 400 gsm tee is a spring and fall piece more than a heat wave piece.

Our tees by weight

• Full Service Heavyweight Tee: 430 gsm (12.7 oz), 100% cotton, vintage wash, frayed raw edges, retro gas pump graphic.
• Spec Sheet Tee: 250 gsm (7.4 oz), 100% cotton, snow wash, oversized with drop shoulders, supercar spec sheet on the back. Four colors.
• Spec Sheet Long Sleeve: 100% cotton, loose fit, same back print.

Care

Machine wash at 30°C (86°F) on a gentle cycle, tumble dry low, no bleach, and keep the iron off the print.

Going heavier on top? Read What Makes a Heavyweight Hoodie, or shop all Car T-Shirts.