EVERYDAY MATERIALSAtlas
Managing comfort and moisture

Cotton or polyester against the skin?

A fibre is only one part of a fabric. Yarn shape, weave or knit, thickness, finishes and fit determine how air and liquid move through clothing. Fibre behaviour explains tendencies, not a guarantee of comfort.

On a phone, each design question stacks the material choices for easier reading.

Qualitative comparison · Grade, shape and operating conditions can change these tendencies.
Design questionCottonPolyester fibre
Water inside the fibreCellulose takes up moisture; wet fabric may retain substantial water.Low moisture uptake in the fibre; fabric can still hold water between yarns.
DryingRetained water can make drying slower under similar conditions.Can dry quickly, depending on fabric structure and conditions.
WearSoftness, shrinkage and creasing depend on construction and finishing.Strong fibres resist wear, but pilling and odour retention can be concerns.
CircularityDyes, blends and finishes complicate recovery of cellulose.Pure polyester and blended garments need different recycling processes.

What changes the answer?

Choose for the activity and care conditions. A blend may improve use performance while making fibre separation harder. Neither plant origin nor recycled content alone settles the whole lifecycle.

Follow the evidence

Original explanations informed by the sources below. Technical and industry sources support material behaviour; industry environmental marketing is not treated as a universal comparison. Read our editorial method.