GSM guide for B2B wholesale buyers, private label brands & apparel sourcing
What is GSM?
GSM stands for grams per square meter. It's the standard way textile mills measure fabric density, and it maps directly to how heavy a shirt feels. For US clients, here are the conversions:
- 180 GSM ≈ 5.3 oz
- 200 GSM ≈ 5.9 oz
- 240 GSM ≈ 7.1 oz
One thing GSM won't tell you: quality. Yarn construction (combed versus ring-spun), finishing, and dyeing decide how the fabric feels and how it holds up. Two 200 GSM fabrics from different mills can be completely different products.
1. 180 GSM
Hand feel: light and soft, breathes well. Fine for most colors, though white runs slightly sheer.
Where it works: hot and tropical markets, summer lines, promo tees, event giveaways, corporate uniforms. Also budget retail basics, where volume matters more than luxury hand feel.
Printing: no issues with screen print, DTG, or DTF transfer.
Pros: lowest material cost, lightest shipping weight, best airflow.
Cons: little structure, and it can stretch out after repeated washing. The wrong choice for oversized streetwear.
2. 200 GSM
Hand feel: solid mid-weight with good opacity across every color.
Where it works: all-season staples for temperate markets (USA, Europe), private label everyday basics, branded merch, small-batch custom printing. If you're unsure what your market wants, start here. It's the weight most of our B2B buyers end up ordering.
Printing: handles everything, including embroidery and heat transfer. The most forgiving surface for decoration.
Pros: the best balance of price, durability, and comfort, and it holds its shape far better than 180 GSM.
Cons: warmer than 180 GSM in extreme summer heat. Rarely a dealbreaker.
3. 240 GSM heavyweight
Hand feel: thick and sturdy with real drape. Fully opaque.
Where it works: streetwear brands, oversized and boxy fits, premium limited drops, spring/autumn wear, merch for brands that want the shirt itself to signal quality.
Printing: the best surface in this lineup for bold graphics, large screen prints, and embroidery.
Pros: resists stretching, collar twisting, and wrinkling. Customers feel the difference, which supports a higher retail price.
Cons: higher fabric cost, heavier shipping, and too warm for hot, humid weather.
4. Quick comparison
Spec 180 GSM 200 GSM 240 GSM
Weight class Light Mid-weight Heavyweight
Climate fit Hot / tropical All-season, temperate Cool / mild
Opacity Good (white slightly sheer) Very good Excellent
Print / embroidery Good Excellent Outstanding
Silhouette Regular fit Regular / relaxed Oversized / boxy
Price tier Budget Standard Premium
5. How to pick for your order
180 GSM if you're running large promo orders or summer collections for hot-region markets and cost control drives the decision.
200 GSM if you're sourcing year-round private label basics or simply don't know your market's preference yet. For US and EU buyers, this is the safe bet.
240 GSM if streetwear, oversized cuts, or premium merch is the brand, and the higher retail price is part of the plan.
One last tip
Before placing bulk orders, confirm two things beyond GSM: yarn construction (ring-spun combed cotton for all three weights is what we recommend) and pre-production samples. The same GSM can feel like two different fabrics depending on yarn quality and wash finish. GSM is a starting point for the conversation, not the answer.