Anastasia Vasilieva is a sustainable fashion researcher and founder of Treehouse, a certified organic kidswear brand. Her work on non-toxic clothing has been featured in podcasts, press, and guest lectures at FIT and Georgetown.
22 May 2025
22 May 2025
CONTENTS
Why Parents Keep Asking Us About Linen
We get this question all the time: āIs linen really breathable, or is cotton better for the heat?ā
If youāve ever peeled a damp cotton tee off your child after a summer playground playdate, you already know breathability isnāt optional; itās survival. Kids sweat, run, nap, and spill their way through the day. They need fabrics that really can keep up.
Hereās the simple answer: linen is one of the most breathable fabrics available to us as parents. The longer answer? Itās about how flax fibers are built and how linen fabric is woven.
And yes, Iāve seen it firsthand. On a sticky July afternoon in New York, my youngest wore a linen romper while I was wilting in the heat. He stayed dry and cool. That was the moment I stopped doubting linen and started building whole collections around it (oh, and making sure I wore linen too!).
Linen comes from flax fibers, which are hollow and porous. That means air doesnāt just sit; it moves through the clothing. The fibers act like tiny vents, pulling heat and moisture away from the body.
Think about the difference between sitting in a crowded subway car versus cracking a window open. Thatās linen.
The Secretās in the Weave
Breathability isnāt just about the fiber itself. Linen is usually woven in a looser, airier pattern than cotton. Combine that with its natural stiffness, and you get fabric that doesnāt cling to the body.
That small gap between fabric and skin is a game changer; itās why kids in linen shirts come home comfortable instead of sticky and overheated.
Does Linen Actually Keep Kids Cool?
Short answer: yes. Longer answer: Linen doesnāt just cool, it regulates temperature year-round.
Linen in Hot Weather
In summer, linenās breathability does the heavy lifting. It releases body heat, absorbs sweat, and dries quickly. Thatās why itās been the go-to fabric in warm climates for centuries (and continues to be.
Weāve dressed our kids in linen for family trips to Spain in August and NYC heatwaves alike, and it consistently keeps them cooler than cotton or so-called performance fabrics ever did.
Not Just a Summer Fabric
Hereās the surprise: linen isnāt only for heat. Those same hollow fibers that release warmth in summer can trap it in cooler weather. Linen adapts to both the body and the environment.
So no, linen isnāt āvacation fabric.ā Itās a true year-round staple and the texture makes it look so good year-round.
Parents often compare linen and cotton. Both are natural, both are breathable, but they do behave differently. Hereās how.
Weave & Structure: Cotton fibers are shorter and more tightly woven. Linenās long, hollow fibers and loose weave let air move more freely.
Moisture: Linen can absorb about 20% of its weight without feeling damp, and then it dries quickly. Cotton holds onto moisture longer, which is why cotton tees can sometimes feel clammy.
Feel: Cotton is softer straight out of the package. Linen starts crisper, but softens with every wash. Over time, it molds to the body and actually gets more comfortable. Some kids might find unwashed (none chemically treated linen) a bit more textured to wear than cotton, but most kids love the way it softens with each wash.
So if youāre wondering is linen or cotton more breathable, linen wins, particularly in heat and humidity.
Final Thoughts
So, is linen breathable? Yes, and then some.
Hollow flax fibers = natural airflow.
Loose weave + non-cling = built-in ventilation.
Moisture absorption + quick dry = comfort even in humidity.
Thermoregulation = keeps kids cool in summer and cozy in winter.
Thatās why we see linen not as a seasonal trend, but as a year-round investment in comfort, health, and durability.
Want to dig deeper into linenās other superpowers? Check out our guide on the benefits of linenĀ and see why itās one of the fabrics we trust most for kids.
Explore our kidsā linen collectionĀ to find breathable, durable, eco-friendly clothes made for real life.
Our commitment to you extends beyond just the our clothing - we prioritize the well-being of your children, the environment, and the workers who craft our pieces.