Are polyester pajamas safe for children to sleep in?
Caution. Polyester fabric is a plastic and contains chemical additives. Polyester pajamas may also be treated with flame retardants. Organic cotton is a safer choice.
What's actually in it
Polyester is a petroleum-based plastic polymer. Children's polyester pajamas have two chemical concerns: first, the chemical additives in the polyester fiber itself including stabilizers and processing chemicals; second, flame retardant chemicals that are commonly applied to children's sleepwear to meet federal flammability standards.
Children sleep 10-14 hours per night, which means they spend roughly half their lives in skin contact with whatever their pajamas are made from. The chemical exposure from pajamas is continuous and intimate.
What the research says
A 2026 study on flame retardant exposure from household products found that children sleeping on and wearing treated synthetic fabrics had measurably higher flame retardant metabolite levels in urine compared to children using untreated natural fiber sleepwear. The study identified sleepwear as a significant exposure pathway for flame retardant chemicals.
Organic cotton pajamas meet flammability standards through tight weave construction rather than chemical treatment when labeled "snug fit." Look for 100% organic cotton pajamas labeled GOTS certified without added flame retardants. They're safe, breathable, and free from both polyester additives and flame retardant chemicals.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Flame retardant exposure from children's sleepwear | Environ Int | 2026 |
What to use instead
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