Cotton vs Polyester

Cotton is a plant fiber that is strong and absorbent. Polyester is a synthetic that takes up very little moisture. Textile extension guidance describes cotton as poor in wrinkle resistance and prone to shrinking, and polyester as extremely wrinkle resistant, quick drying and resistant to abrasion and mildew.

Real garments are rarely so clear-cut, because many fabrics blend the two to get some of each. Weave, knit and finish also change how a cloth feels. One lab study found polyester held more body oils and bacteria than cotton, which helps explain why synthetic sportswear can hold odor.

Cotton vs Polyester side by side

Last verified October 2026. Typical values; individual animals, products and local prices vary.

Which one fits you

Cotton

• You want soft, breathable clothing or sheets for everyday wear and sleep
• You want a fabric that absorbs sweat and moisture
• You can tolerate some wrinkling and wash with care to limit shrinking
• You plan to iron or dry on warmer settings

Polyester

• You want clothes that stay smooth with little ironing, such as travel or work wear
• You need fast drying for sports, outdoor use or damp climates
• You want a fabric that resists abrasion and mildew
• You will wash and dry on low heat

How this works

The quiz maps your priorities, such as ironing, drying time, moisture and washing heat, to the fiber properties in extension and research sources. It treats pure cotton and pure polyester. It cannot judge a specific garment, brand or blend ratio, so treat the result as a guide to the fiber, not the finished fabric.

Many fabrics are blends, and weave, knit and finishes change how a cloth wears. Treat the result as a starting point and read the label and the fabric's description. Many fabrics are blends, and weave, knit and finishes change how a cloth wears and feels. Treat the result as a starting point and read the label and the fabric description before buying.

Where these numbers come from

The figures and defaults on this page are based on:

• UGA Extension Textiles: Fiber Types, Summarizes cotton and polyester absorbency, wrinkling, drying, heat and mildew traits. (checked October 2026)
• PMC: The Bacterial Life Cycle in Textiles is Governed by Fiber Hydrophobicity, Gives water retained and bacteria and sebum differences for cotton versus polyester. (checked October 2026)

Fabric guide. Individual garments differ by weave, finish and blend, so check the care label.