Your Underwear Is Probably Made of Plastic. Here’s Why Ours Isn’t.

Most underwear today is made largely from polyester, nylon and elastane.

In other words: plastic.

Soft plastic. Stretchy plastic. Smooth fabric that feels familiar because most of us have worn it for years.

We think about plastic bottles. Fleece jackets. Packaging.

Rarely the fabric we wear closest to our skin, every single day.

And yet, most underwear is made from exactly that.

The part that sits closest to your body. The part you wear from morning to evening. Through cold mornings, warm offices, buses, meetings, dinner, the sofa.

All day.

No wonder so many of us end the day wanting to take it off.

The Underwear Drawer Problem Nobody Talks About

Most of us have a drawer full of underwear.

And still, somehow, nothing we really want to wear.

The lace one that looks pretty but digs in.

The soft one that turns damp too quickly.

The comfortable one that has lost its shape.

The “good enough” one you keep reaching for, even though you do not actually like it.

I think many women know this feeling.

You buy something because it looks nice. Or because everyone says it is practical. Or because it is what you have always worn.

Then, somewhere around 4 pm, it starts to feel wrong.

Too warm. Too tight. Too synthetic. Too much.

Not terrible. Just enough that you notice it.

And once you notice it, you cannot stop noticing it.

What Happens When We Wash Synthetic Underwear

Polyester and nylon are forms of plastic.

Each time synthetic fabrics are washed, tiny fibres can break off and end up in the water. These are called microplastics.

Most people know this happens with fleece.

Few think about underwear.

But underwear is one of the things we wash most often.

And often replace most often too.

I am not interested in making people feel guilty. Only in paying attention.

Because if something sits against your skin every day, it seems reasonable to ask what it is made from.

Most “Natural” Underwear Isn’t Really Natural Either

Even many wool garments are not just wool.

Most machine washable wool is treated with something called superwash.

Superwash makes wool easier to wash and less likely to shrink. But it often does that by coating the wool fibre with a very thin layer of synthetic resin.

Again: plastic.

You usually do not see it. You may not feel it at first.

But it changes the wool.

It becomes smoother, slightly shinier, less alive somehow.

Less like the wool many of us are looking for in the first place.

That is why we chose not to use it.

Why We Chose Untreated Merino Wool

Welhavens is made from untreated 17.5 micron merino wool.

No superwash. No plastic coating.

Just soft, breathable wool, made to be worn close to the skin.

The kind that keeps you warm when it is cold outside and comfortable when the room is suddenly too warm.

The kind that still feels fresh at the end of the day.

The kind you do not rush to take off the moment you come home.

It needs a little more care. A wool cycle. Wool detergent. No tumble dryer.

For us, that is worth it.

Because we did not want to make underwear that only looked beautiful in the morning.

We wanted to make the kind you still want to wear by evening.

Not more.

Just right.