T-Shirt GSM and Yarn Count Explained
Understand the difference between fabric weight and yarn count, and compare real garment specifications before choosing shirts for a team.
GSM describes fabric mass per square metre. Yarn count describes the yarn using a particular numbering system. They describe different things, so neither number alone can tell you that a shirt will be comfortable, durable or suitable for your print.
Keep weight and yarn numbering separate
When comparing GSM, check that suppliers are describing the same part of the garment and using comparable specifications. Garment weight in grams is not the same as fabric GSM: a larger finished shirt generally uses more fabric.
Yarn counts such as 20s and 32s must be read in the context of the numbering system and construction. Do not infer an exact fabric weight or performance simply from a yarn-count label. Ask the supplier what the number refers to.
Connect the specification to the job
A more substantial fabric can suit one brief while a lighter garment suits another. Fit, weave or knit structure, finishing and the working environment all affect the result. “Heavier” does not automatically mean “better”.
Ask what you want to improve compared with the current shirt: shape, weight, feel or comfort during a shift. Use the answers to compare actual samples rather than selecting the largest number on a product list.
Record the chosen garment specification
Keep the supplier’s model reference, composition, stated weight, colour and size chart together. This makes future quotation comparisons and repeat orders clearer, even when a supplier changes its range.
For MIREN orders, the requested sourced garment and print requirements still need assessment. Specifications and available stock must be confirmed before agreeing the job; no universal GSM or yarn count is promised for every application.
Before you contact a printer
- Current or preferred garment reference
- Supplier composition and weight specification
- Working conditions and fit preference
- Colour and size requirements
Send your garment reference, artwork and required date so the team can check stock and confirm the job.
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