How to Read Linen Pillowcase Product Descriptions When Ordering Online

by MATTEO

The Terms That Actually Matter

Ordering a linen pillowcase online sounds simple until you’re staring at a product page that reads something like: 100% French flax linen, stonewashed, OEKO-TEX Standard 100 certified, 170 GSM, garment-dyed with reactive dyes. Each phrase carries real information — about how the fabric will feel on your face, whether it will shrink the first time you wash it, and whether the dyes used are safe for direct skin contact. Most shoppers skim past these details. The ones who don’t end up with bedding they actually love.

Linen is not a uniform material. Two pillowcases can both be labeled “100% linen” and feel completely different, depending on the yarn weight, the finishing process, and how the color was applied. Understanding what each term in a product description actually means is the fastest way to shop with confidence — and to avoid the disappointment of opening a package that doesn’t match your expectations.

Stonewashed vs. Garment-Washed: What the Finish Tells You

These two terms show up constantly in linen product descriptions, and they are often used interchangeably — incorrectly.

Garment-washed is the broader category. It refers to any process in which the finished textile is washed after it has been cut and sewn into its final form, rather than washing the raw fabric before construction. The main practical benefit: the main advantage of garment washing is the retention of size and shape — clothing and linen items tend to shrink after the first wash, but garment-washed articles are more likely to retain their size and shape because any shrinking was done prior to manufacturing. In plain terms, a garment-washed pillowcase is pre-shrunk and will hold its dimensions after you launder it at home.

Stonewashed is a specific type of garment wash. Stones — pumice or volcanic rock — are added to large industrial washing machines to accelerate the garment-wash effect and give the textile an even more distinctive appearance and softer hand. The abrasive action of the stones during the washing process gives stonewashed linen a gentle, worn-in feel right from the start, along with subtle color variation that gives each piece a slightly different character. Stonewashed linen boasts a charming vintage appearance, thanks to the fading and slight distressing that occurs during the stonewashing process.

So what’s the practical difference when you’re shopping? Garment-washed linen tends to have a more refined, even finish. Stonewashed linen leans into a relaxed, casual aesthetic with more visible texture. Standard linen tends to hold color throughout the entire fabric, creating a uniform, even look, while stonewashed linen is a bit more nuanced — as the stones distress the fabric, they can create variances in the way the dye absorbs into the material. If you want something that looks polished and formal, garment-washed is probably the better fit. If you’re after that lived-in, effortless look, stonewashed is what you want.

Some brands — including Matteo in Los Angeles — use a proprietary washing process for their Vintage Linen pillowcases that opens and penetrates the depths of the fibers, softening each one through a special dyehouse wash. This wash opens and penetrates the depths of the fibers, softening each one and creating a truly special sleep. That kind of detail in a product description tells you the brand is thinking carefully about the finishing process, not just the raw material.

What OEKO-TEX Actually Certifies (and What It Doesn’t)

OEKO-TEX Standard 100 is a globally recognized testing and certification system that ensures fabrics and textiles are tested for harmful chemicals and substances. When you see this label on a linen pillowcase, it means the product has been independently tested — not just self-declared by the manufacturer. A textile product with the OEKO-TEX Standard 100 label has been independently tested for harmful substances according to strict scientific criteria, far beyond legal regulations.

For bedding specifically, this matters more than it might for, say, a decorative wall hanging. Bedding is part of OEKO-TEX’s second product class, which includes any product that comes into direct contact with the skin. The substances tested for include formaldehyde, nickel, and azo dyes — chemicals that can cause skin irritation, especially for people with sensitivities.

Two things OEKO-TEX does not certify: organic farming practices and thread count. Unlike OEKO-TEX Standard 100, which ensures textiles are tested for harmful chemicals, GOTS (Global Organic Textile Standard) specifically applies to organic textiles. A pillowcase can be OEKO-TEX certified without being made from organically grown flax, and vice versa. While organic bedding and other fabric can be OEKO-TEX certified, it’s not always the case — not all OEKO-TEX-certified bedding is organic. If both matter to you, look for products that carry both certifications.

You can verify any OEKO-TEX certification by scanning the QR code on the label or entering the certificate number on the OEKO-TEX website — a useful step when buying from a brand you haven’t ordered from before.

GSM: The Number That Replaces Thread Count for Linen

Thread count is the metric cotton shoppers are trained to look for. It’s largely irrelevant for linen. Linen is made from long, irregular flax fibers that don’t lend themselves to dense weaves — so thread count tells you very little. Instead, GSM tells you how much the fabric weighs per square meter, which translates directly into how heavy, soft, breathable, or durable the sheets will feel.

GSM stands for grams per square meter. It’s a direct measurement of fabric density. For linen pillowcases, the number shapes the entire experience:

One caveat worth knowing: finishing processes such as washing, calendaring, or brushing can raise or lower the final GSM of linen fabric by altering its density and texture. A brand listing GSM post-finishing is giving you more accurate information than one listing pre-finishing specs. If GSM isn’t disclosed at all, that’s worth noting — lower-priced linen bedding often utilizes a lighter weight or lower quality flax, resulting in a less luxurious and potentially less durable product.

Garment-Dyed vs. Piece-Dyed: Why Color Application Matters

The way color is applied to linen changes how the finished pillowcase looks, ages, and responds to washing. Most product descriptions will mention one of two methods.

Piece-dyed linen is dyed as a large roll of finished fabric before it’s cut and sewn. The color tends to be uniform and consistent across batches. This is the standard approach for most mass-market bedding.

Garment-dyed linen is dyed after the pillowcase has been fully constructed. This produces richer, more complex color — but it comes with natural variation. The largest challenge with garment-dyeing is the truth that it is an art, and not a science. A shade variation of +/- 10% from dye-lot to dye-lot is normal. If you’re ordering two pillowcases at different times, they may not be a perfect match. That’s not a defect — it’s the nature of the process, and it’s part of what gives garment-dyed linen its character.

When a brand uses reactive dyes (often noted in the care instructions), those dyes bond chemically with the fiber rather than sitting on top of it, which generally means better color retention over time. But reactive dyes are sensitive to bleach and whitening agents — the reactive dyes used for garment-dyeing are not resistant to whitening agents such as chlorine bleach, alpha hydroxy acids, and benzoyl peroxide. That’s why care labels on garment-dyed linen consistently warn against bleach.

Matteo’s linen pillowcase collection uses garment-washing and non-toxic dyes across its Vintage Linen and Cluny styles, with the finished pillowcases available across a full palette of colors. The brand is transparent about dye-lot variation, which is exactly the kind of disclosure worth looking for when ordering online.

Other Terms Worth Knowing Before You Click ‘Add to Cart’

Pre-shrunk: Synonymous with garment-washed. The fabric has already gone through its initial shrinkage during manufacturing. A product described as pre-shrunk should hold its stated dimensions after home laundering — though after commercial washing, linen can still shrink up to 5% in some cases, so slight movement is normal.

Enzyme-washed: A more modern alternative to stonewashing. Natural enzymes are added to the water to break down the stiff pectin in the flax fibers, making the fabric soft without using harsh acids. The result is similar to stonewashing in softness but with a slightly more refined surface texture. Stonewashed linen uses small pumice stones during the washing process to achieve a more worn-in, slightly rougher texture, while standard washed linen uses water and enzyme treatments for a softer, smoother finish that feels more refined on the skin.

Yarn count (or metric yarn number): Occasionally listed in more technical product descriptions. Matteo’s Vintage Linen, for example, uses a 28 single-metric yarn in both the warp and weft. The weave is extremely balanced, which produces a linen fabric that is both soft and sturdy. A balanced weave means the pillowcase won’t pull or distort unevenly over time.

Envelope closure vs. open end: The closure style affects how securely your pillow stays inside the case. Envelope closures fold over the pillow like a pocket and are generally neater in appearance. Open-end pillowcases are the classic style — simpler, and easier to slip on and off.

Pillowcase vs. sham: Typically, pillowcases loosely encase the pillow and are open on the side, whereas shams are more fitted and employ some method of closure to keep the pillow in place. Shams are primarily decorative and are usually layered at the front of the bed, while pillowcases are what you actually sleep on.

Reading a linen product description carefully takes about two extra minutes. Those two minutes are the difference between ordering something that feels exactly right and returning a pillowcase that looked better in the photo. The vocabulary isn’t complicated once you know what each term is actually describing — and the brands worth buying from are the ones that bother to explain it.