Fabric GSM Guide for Clothing Brands and Startups

July 1, 2026 | By FABRIOZA

One of the most important decisions you'll make when manufacturing clothing is fabric weight — measured in GSM (grams per square meter). Choose too light, and your garment feels cheap. Choose too heavy, and it's uncomfortable or expensive. This guide breaks down exactly what GSM you need for every type of garment, so you can specify with confidence.

What is GSM?

GSM stands for Grams per Square Meter. It measures the weight of fabric — specifically, how many grams one square meter of the fabric weighs. Higher GSM = heavier, thicker, more durable fabric. Lower GSM = lighter, thinner, more breathable fabric.

Important: GSM measures weight, not quality. A 180gsm premium cotton can feel better than a 220gsm cheap cotton. Fiber quality and construction matter as much as weight.

GSM Guide by Garment Type

T-Shirts

GSM	Weight	Best For	Feel
120-140	Lightweight	Undershirts, summer	Thin, breathable, slightly see-through
150-170	Standard	Retail basics, promo tees	Standard weight, good drape
180-200	Premium	Streetwear, premium brands	Substantial, soft, durable
220-300	Heavyweight	Streetwear, vintage style	Thick, structured, long-lasting

Hoodies & Sweatshirts

GSM	Weight	Best For
250-280	Lightweight	Layering, gym wear, warm climates
300-320	Mid-Weight	All-purpose, retail brands
350-380	Heavyweight	Premium streetwear, winter wear
400+	Ultra-Heavyweight	Luxury brands, statement pieces

Leggings & Activewear

GSM	Compression Level	Best For
180-220	Light compression	Yoga, loungewear
220-260	Medium compression	Gym, Pilates
260-320	High compression	Running, HIIT, CrossFit

Shorts

GSM	Style	Best For
140-180	Lightweight	Running, basketball
180-220	Standard	Casual, gym
250-320	Fleece-lined	Loungewear, winter

How GSM Affects Pricing

Heavier fabric costs more — but not linearly. A 400gsm hoodie uses roughly 2x the fabric of a 200gsm hoodie, but the price difference is typically 30-50%, not 100%. This is because labor and overhead costs stay relatively constant.

GSM and Fabric Type

The same GSM feels different depending on fabric:

• Cotton: Heavier feel, soft, breathable
• Polyester: Lighter feel, slick, moisture-wicking
• French Terry: Medium weight, looped interior
• Fleece: Lighter GSM but warmer (trapped air)
• Jersey Knit: Soft drape, stretchy

Choosing GSM for Your Brand

Budget/Promotional: 150-170gsm tees, 280-300gsm hoodies

Mid-Range Retail: 180-200gsm tees, 320gsm hoodies

Premium/Streetwear: 220-300gsm tees, 360-400gsm hoodies

Athletic: 160-200gsm performance fabrics