From Cotton to Yarn: What Knitted Fabric Buyers Should Specify

Before you choose a sample

A cotton fabric brief begins before the first knitted loop. Two fabrics described as “100% cotton jersey” can have different surfaces, weights and performance. For a wholesale buyer, the aim is to connect the garment you want to make with a specification that a supplier can evaluate, sample and repeat.

Start with the end use: a lightweight promotional T-shirt, a close-fitting everyday top and a structured overshirt need different development conversations. Bring a reference garment when possible, but explain which qualities you want to retain and which you want to change.

Carded, combed and ring-spun describe different things

Carding organises prepared cotton into a continuous strand called sliver. Combing is an additional preparation step that removes shorter fibres and can support finer yarn production. “Combed” describes preparation; “ring-spun” describes a spinning method. A yarn can therefore be both combed and ring-spun. These terms should not be treated as competing fibre compositions. See CottonWorks’ guides to fibre preparation and yarn spinning.

Ask for the full yarn description rather than approving a single attractive adjective. Then compare finished samples against the same intended use. Specify whether an understated surface, a deliberately textured appearance or a particularly smooth handle matters most to your collection.

Read yarn count with its unit

Yarn count expresses linear density, not finished fabric weight. In the English cotton count system, Ne, a higher number indicates a finer yarn. In direct systems such as tex, a higher number indicates greater mass for a fixed length. Record the count system and whether the yarn is single or plied; a number without its unit can create an avoidable misunderstanding. CottonWorks explains yarn numbering and ply.

Do not translate a yarn count directly into a promised GSM. Ask the supplier to propose the construction and finishing route alongside the yarn. Keep the approved fabric sample and its specification together so later discussions refer to the same material.

Look beyond the fibre name

Cotton fibre characteristics include length, uniformity, strength and micronaire. These influence processing and the resulting yarn or fabric, so “cotton” alone is not a complete quality specification. Cotton Incorporated’s fibre-property reference connects these characteristics with outcomes such as evenness, appearance and dyeability.

A buyer does not need to prescribe every spinning setting. Instead, agree the finished product requirements and ask how the proposed yarn supports them. Request relevant evidence for the exact sampled fabric rather than relying on a broad description of a supplier’s collection.

Separate traceability from performance

If your collection requires a certified material claim, identify that requirement at the enquiry stage. Textile Exchange distinguishes a scope certificate, which covers an organisation’s certified activities, from transaction documentation for particular goods. Verify the applicable scheme, product scope and chain of custody before using a claim. Certification should not be inferred from a cotton photograph or a general sustainability statement. Read Textile Exchange’s chain-of-custody explanation.

Questions to put in your sourcing brief

• What garment, fit and care routine are we developing for?
• Which fibre composition, yarn preparation and count are proposed?
• Which sample represents the proposed bulk construction and finish?
• How will appearance and performance be assessed before approval?
• What documentation is available for any requested material claim?

Finish the brief with target quantity, colour count and destination market. Ask which requirements are feasible together and where an alternative should be sampled. This gives the supplier a useful starting point without assuming that a premium-sounding yarn description guarantees the right finished fabric.