Mul cotton (mulmul): the ‘woven air’ that beats any Indian summer

There is a fabric this country has been making for so long that one of its old names is a boast: hawa ka kapda — woven air. That fabric is mulmul, and if you have ever wondered how anyone survived an Indian summer before air-conditioning, part of the answer is that they wore cloth this light.

We work with cotton every day, and mul remains the one that still feels a little like a magic trick. Here is what it actually is.

What mul cotton actually is

Mul — also spelled mulmul or malmal, and known in English as muslin — is one of the finest, lightest cotton weaves in the world. It is pure cotton, spun into very fine, high-count yarn and set in an open plain weave. That combination is the whole point: fine yarn plus open weave gives you a cloth that is soft, breathable, and very slightly sheer.

The numbers make the case better than adjectives. A full five-and-a-half-metre mulmul saree weighs barely 300 to 400 grams. You can wear one through a 40-degree afternoon and still feel like you are breathing.

Why it’s the best cotton for real heat

Two properties do the work.

First, weight — or the near-absence of it. We’ve written before that fabric weight matters more than fibre for summer comfort, and mul is the proof. There is simply very little cloth between you and the air.

Second, the open weave. Those tiny, regular gaps let air move and let sweat evaporate fast, so mul absorbs moisture and releases it instead of turning heavy and clingy. It keeps you cool the way good summer cloth should — by getting out of the way.

And there is a quiet bonus: mul softens every time you wash it. A mul kurta three summers old is gentler against the skin than the day you bought it. Like good linen, it improves with use rather than wearing out.

A short, honest history

Mul’s story runs through Bengal, where weavers in and around Dhaka once spun muslin so fine that whole poetic names grew up around it — cloth said to pass through a ring, cloth called woven air. It was traded across the ancient world and prized in courts far from where it was made. Today most mul is woven on looms rather than by the near-impossible hand-spinning of that era, but the character of the cloth — fine, soft, weightless — is the same inheritance.

We think it matters to know this. When you wear mul, you are wearing one of the oldest luxuries India ever exported, now quiet and everyday.

What mul is good for (and what it isn’t)

Wear it for: kurtas, everyday shirts, dupattas, sarees, loungewear, anything worn against the skin in heat. Layered pieces, because it’s so light it never adds warmth.

Be realistic about: its sheerness — fine mul can be slightly see-through, which is why it’s often worn layered or lined. And its softness cuts both ways: mul is delicate and wants gentle handling. This is not the cloth for hard daily abuse; it’s the cloth for comfort.

How to care for mul cotton

The rules are close to linen’s — heat and roughness are the enemies:

1. Wash cool and gentle. Cold or lukewarm water, mild detergent, a delicate cycle — or better, hand-wash. Never hot water.
2. Don’t wring or twist. Press the water out gently. The weave is fine; treat it kindly.
3. Air-dry in shade. Direct sun fades colour. A padded hanger or a flat dry is best.
4. Iron slightly damp, on medium. Mul takes a press easily when it’s still a little wet.
5. Store folded, with room. Don’t crush it under a stack for months.

Do this and mul does what it has always done: keeps you cool, gets softer, and lasts far longer than something this delicate has any right to.

From the WeRico studio in Delhi — notes on the fabrics we love, published while we build.