A loose-fit white 100% linen shirt with a V-neckline and curved hem, shown as a standalone product shot.

100% Linen: Why Sarolu Doesn't Cut Our Pure Linen With Synthetic Fibres

"100% linen" should mean exactly what it says. In practice, it doesn't always — some garments marketed as linen are actually majority-polyester blends with a small linen share added for texture, or a "linen-look" fabric that contains no linen at all. When we put "100% linen" on a product, we mean it literally: nothing else in the yarn.

What "100% Linen" Should Mean

A genuine 100% linen garment is woven entirely from flax fibre. No polyester for easier care, no viscose to bulk out the yarn, no unlabelled synthetic filler. That distinction matters because linen's defining qualities — breathability, moisture absorption, biodegradability, the way it softens rather than pills with age — come specifically from the flax fibre itself. Dilute the composition and you dilute those qualities, even if the fabric still looks and photographs like linen from a distance.

Why We Keep Our Pure Linen Pieces Genuinely Pure

When a piece in our range is labelled 100% linen, it's built that way from the yarn up, not blended down and relabelled for margin. That's a deliberate choice: a synthetic-cut "linen" fabric is cheaper to produce, but it loses the breathability and natural feel that's the entire reason someone reaches for linen in the first place. We'd rather sell fewer pieces honestly labelled than more pieces that quietly compromise on what the label claims.

Where We Do Use Thoughtful Blends — And Say So

Not everything in our range is 100% linen, and it isn't meant to be. Blends with tencel, cotton or viscose serve a genuine purpose — a softer drape, less initial stiffness, a smoother hand for pieces where that's the better outcome. The difference is transparency: every blend in our range is labelled with its actual composition, not marketed as "linen" while quietly containing a majority of something else. You can read more about how the two compare in our guide to pure linen versus linen blends.

How to Spot the Difference When You Shop

Whether you're shopping with us or elsewhere, the same check applies: look for the composition percentage, not just the word "linen" in the title. A listing that says "100% linen" but is vague on fabric weight or feels suspiciously inexpensive for that claim is worth a second look. A listing that clearly states a blend percentage — "60% linen, 40% viscose," for instance — is usually more trustworthy than one that avoids the number altogether while still using "linen" prominently in the name.

What Genuine Purity Costs You (and Gives Back)

Being honest about this means being honest about the trade-off too. A genuinely 100% linen piece creases more visibly than a synthetic-cut blend, and it generally asks for a little more care — hung rather than folded, ironed on a warm setting if you want it smooth rather than left to relax naturally. In exchange, you get a fabric that breathes properly, that softens rather than pills with age, and that will eventually biodegrade rather than sitting in landfill as microplastic for centuries the way a polyester-heavy "linen" blend will. That's a trade most people are glad to make once it's explained rather than hidden.

The Sarolu 100% Linen Edit

A few pieces worth knowing if you're looking specifically for pure linen: the pure linen V-neck shirt, cut from 100% linen with a pre-washed finish for softness from the first wear; the loose-fit linen cardigan shirt, an open, unstructured 100% linen piece; and the 100% linen bias-cut sleeveless dress, cut on the diagonal for a natural drape that pure linen holds especially well.

The Point of All This

A label is only useful if it's accurate. When we say 100% linen, we mean it isn't cut with anything else — not because a small synthetic share would necessarily ruin a garment, but because calling something pure when it isn't undermines the reason anyone chooses linen at all. If you want to feel that difference for yourself, our full guide to styling linen is a good next stop.

Back to blog