"Linen" on a label doesn't always mean the same thing. A garment can be 100% linen, or it can contain anywhere from 20% to 90% linen blended with cotton, tencel, viscose or another fibre — and the two aren't simply better-or-worse versions of each other. They behave differently, and knowing the difference helps you choose the right one for what you actually want a garment to do.
What "100% Linen" Actually Means
A 100% linen garment is woven entirely from flax fibre, with nothing else in the yarn. That gives you linen in its most characteristic form: maximum breathability, the most pronounced natural texture, and the fabric's distinctive irregular crease at its strongest. It's also the version that softens most noticeably with wear and washing — a new piece of pure linen feels crisper than one that's been through a dozen washes, and that change is part of the appeal rather than a flaw.
Common Linen Blends and What They Add
Linen-cotton
Cotton softens linen's texture and reduces the initial stiffness, giving a fabric that drapes a little more gently and creases a little less dramatically. It's a natural-fibre blend rather than a synthetic one, so it keeps most of linen's breathability while feeling slightly smoother against the skin from the first wear.
Linen-tencel (lyocell)
Tencel is a soft, semi-synthetic fibre made from wood pulp, and blended with linen it produces a noticeably fluid, almost silky drape — useful for pieces like dresses or wide-leg trousers where a heavier fall is part of the design. The trade-off is a slightly less textured, less obviously "linen" surface.
Linen-viscose
Similar in effect to tencel, viscose adds softness and a smoother hand, often used in three-way blends alongside linen and tencel for a fabric that holds a clean line while still breathing well.
Which to Choose, and When
Pure linen makes the most sense when breathability and texture are the priority — the height of summer, a piece you'll wear against bare skin, or simply if you love the way linen's crease looks. A blend makes more sense when you want a smoother drape, a little less crease, or a softer feel from the first wear rather than after months of washing. Neither is more "authentic" than the other; they're suited to different things.
Care is worth factoring in too. Pure linen creases more visibly and benefits from being hung rather than folded, while a linen-tencel or linen-viscose blend tends to hold its shape through a wash cycle with less intervention. If you know you won't want to iron a piece before wearing it, that's a genuinely practical reason to lean towards a blend rather than a purity preference alone.
How to Tell What You're Buying
The composition is always listed in the product details, usually as a percentage — "100% linen," or a blend such as "70% linen, 30% tencel." It's worth checking this rather than relying on how a product photograph looks, since a well-styled blend can photograph very similarly to pure linen. Within Sarolu's range, the 100% linen V-neck shirt is a good example of the pure end of the spectrum, while the tencel-linen wide-leg trousers, at roughly 70% linen, show what a linen-forward blend feels like in practice.
The Wider Point
Neither pure linen nor a linen blend is the "correct" choice — both have a place in a considered wardrobe, and most people end up owning some of each. What matters is knowing which one you're buying and why, rather than assuming any fabric labelled linen behaves the same way. For more on how we handle this distinction across our own range, see our guide to why we don't cut our pure linen pieces with synthetic fibres, and for outfit ideas across both, our guide to styling linen clothing.