Combed vs Carded Cotton: What It Actually Changes in Your Garment

Two garments can both be labelled 100% cotton and behave completely differently after ten washes. The reason is usually not the cotton itself but what happened to the fibre between the bale and the yarn. Combed and carded are the two routes cotton takes through a spinning mill, and choosing between them is one of the highest-leverage decisions in a product brief.

What carding does

Carding is mandatory. Every cotton yarn is carded. The process passes opened fibre over rotating cylinders covered in fine wire teeth, which disentangles the mass, removes the largest impurities and aligns fibres loosely into a sliver. Carded yarn keeps short fibres, known as short fibre content, along with small leaf and seed-coat fragments called neps.

Carded yarn is cheaper, has higher yield per bale, and produces a slightly hairier, more matte surface. For a promotional t-shirt with a one-season life, or a tote bag, carded yarn in the 10s to 16s count range is entirely rational.

What combing adds

Combing is an extra pass applied after carding. Fine combs remove fibres below a set length — typically under 12 to 16 mm — plus the remaining neps. The removed material is called noil, and it typically accounts for 12 to 20 percent of the input weight. That lost weight is the main reason combed yarn costs more.

What you get back: a yarn with far fewer protruding fibre ends, a smoother and more lustrous surface, better dye uptake and evenness, and a fabric that pills noticeably less. Combed cotton also takes a finer yarn count — 30s to 60s and beyond — which carded stock physically cannot hold together.

The measurable differences

• Yarn evenness: combed yarn shows roughly 20–30% lower U% mass variation on an Uster evenness test, which translates directly into fewer thick and thin places visible as streaks in dyed fabric.
• Pilling: combed jersey typically reaches grade 4 on ISO 12945-2 after 7,200 revolutions where an equivalent carded jersey sits at grade 3.
• Handfeel: combed fabric feels smoother and cooler against skin because fewer fibre ends stand proud of the surface.
• Strength: removing the short fibres raises single-yarn strength slightly, which matters at fine counts and in high-stress seams.
• Cost: expect combed yarn to add 8–15% to fabric cost depending on count and cotton market level.

Which one for which product

A practical rule we use with buying teams: specify combed whenever the garment is next to skin, is expected to survive more than one season, or carries a retail price that makes a returns problem expensive. Specify carded when the programme is promotional, single-use, or where a matte vintage hand is the actual design intent.

• Premium basics, polos, underwear, babywear: combed, 30s to 60s.
• Mid-market t-shirts and pyjamas: combed 26s to 32s, or carded 21s if the hand is meant to be dry and matte.
• Heavyweight hoodies in 400 gsm: carded open-end is common and often preferred for the loft, though combed is available.
• Promotional tees, bags, event wear: carded 10s to 16s.

What to put in your tech pack

Writing "100% cotton" on a tech pack invites a mill to substitute the cheapest yarn that meets the description. Instead specify the count, the spinning route and the standard: for example, "100% combed cotton, Ne 30/1 ring-spun single jersey, 180 gsm ±5%, OEKO-TEX STANDARD 100 class II". If you want noil-controlled combed yarn, add a noil percentage. If you are comparing quotes from two factories, this is the single most common reason one is cheaper than the other.