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What Parents Should Know About Microplastics in Their Children’s Clothes
A growing body of research is prompting some parents to take a closer look at the synthetic materials commonly used in children’s sportswear.
As Featured by The Independent
Tuesday 19 May, 2026 09:45 BST
The Story
Most parents now know to read the labels on what they feed their children. They check ingredients in skincare. They filter the water. They have learned to navigate organic, free-from, additive-free, gluten-free.
What almost no one is reading is the care label on a child's sports set.
And that, according to a growing body of peer-reviewed research, is where one of the most underexamined exposure routes in modern parenting may lie, hidden in plain sight: in the very clothes children spend twelve to sixteen hours a day with pressed against their skin.
The fabric question that most parents have never been told to ask is the simplest one of all: what is the clothing actually made of?
In many cases, children's activewear sold on the British high street contains synthetic plastic-based fibres.
Polyester is plastic. Nylon is plastic. Polyamide is plastic. All three are derived from petrochemicals, and all three are widely used in the children's sportswear market, often accounting for a large portion of a garment's composition. They are popular for legitimate reasons.
They stretch, they wick, they are cheap to produce, and they perform well in motion. But they are also synthetic fibres, made using a range of chemical compounds. These materials shed microscopic particles with every wash, every wear, every movement.
Natural-fibre activewear engineered to match the stretch and breathability of synthetic sportswear.
— Svante
Svante are creating performance sets for active children, made from plant-based fabrics.
Researchers at the University of Plymouth have estimated that a single domestic wash load can release hundreds of thousands of microfibres into waterways.
A 2022 study published in Environment International by Heather Leslie and colleagues at Vrije Universiteit Amsterdam detected microplastic particles in the blood of 17 of 22 adult test subjects. A 2021 study in the same journal by Antonio Ragusa and colleagues identified microplastics in human placentas.
More recent peer-reviewed work, including research published in Nature Medicine in 2025, has found microplastic concentrations in human brain tissue at levels significantly higher than in other organs - and rising year on year.
The full health implications remain under active investigation, and researchers are careful to note that the long-term consequences for developing human physiology are not yet fully understood.
But the trajectory of science has shifted. Microplastics are no longer a marine pollution story. They are increasingly understood as an internal human contamination issue.
And children, by virtue of their skin contact hours, their developing systems and their behavioural patterns - running, sweating, rolling, training - are an important part of the discussion.
It is this gap, between what parents know about food, skincare and bedding and what they have not yet been told about clothing, that drove Jennifer Donnelly to spend three years developing a natural-fibre alternative within the children's market.
"I'd spent twenty years buying organic food, filtering our water, choosing natural skincare," Jennifer says. "And one summer afternoon in the garden, with my two children running around in their sports clothes sticking to their skin, I just thought ‘what is actually in the clothes?’"
What she found, she says, horrified her.
Jennifer, an environmental entrepreneur spent three years developing the brand's natural-fibre fabrics.
Jennifer and her husband Ben had spent more than two decades working in the environmental sector and recognised greenwashing when they saw it. The deeper they researched synthetic fabrics, chemical finishes and the dyes used in mainstream children's activewear, the harder it became to dress their children in what was readily available.
"Up until age four, you can find beautiful organic baby grows and natural fibre children's clothes almost everywhere," she says. "After four, that market vanishes. What's left for active children is overwhelmingly synthetic. And the few natural alternatives we did find were either beige and boring or covered in characters."
There were few performance-focused options made primarily from natural fibres, so the Donnelly's set out to build one.
The result, after three years of supplier rejections, failed samples and a global search for manufacturers willing to deviate from industry norms, is Svante - a UK-based children's activewear brand built around three proprietary natural-fibre fabrics: Plantech™, MeshFlex™ and EarthKnit™.
Every garment is engineered to deliver the breathability, stretch and durability that active children require.
The development process, Jennifer says, was an education in how entrenched synthetics have become across the industry.
"Manufacturers would send us samples and tell us everything was natural. Then we'd inspect the cuffs and find synthetic elastane. The stitching would be nylon. They'd shrug and tell us it's what everybody uses, and list the names of huge global brands they produce for. We had to keep walking away. Once we understood what we understood, we couldn't compromise."
Beyond fibre composition, Svante's approach extends to the chemicals routinely used in conventional activewear manufacturing, including the finishes and waterproofing agents that frequently contain polyfluoroalkyl substances, the so-called forever chemicals now under regulatory review across the European Union and the United States.
"There were so many evenings I'd pull off the kids' socks or a new tracksuit and find the dye smudged across their legs," Donnelly says. "Skin is the largest organ in the body. We were sending them out for the day in materials we'd never have allowed near their food."
The wider Svante project includes RE:Svante, a UK take-back scheme that accepts any branded children's sportswear in exchange for store credit.
One of the brand's featured products, the Girls Plantech™ 2-Piece Sports Set, has become the entry point for parents discovering the category, available alongside the wider range at svantestudio.com.
What Svante is unlikely to do is shift the conversation overnight. The cultural lag between scientific evidence and consumer behaviour in clothing appears to lag behind conversations happening in categories such as food and skincare, both of which have evolved gradually over decades.
Clean clothing, despite carrying higher skin contact hours than either, has barely begun.
But the precedent matters. Every category of conscious parenting started with a small group of parents asking a question nobody else was asking, and a small group of brands willing to build the answer.
In children's activewear, the question is finally being asked.
Brands such as Svante are now attempting to offer alternatives.
Discover Svante at
Instagram svante_natural_movement
Svante, is the worlds first to build children's sportswear around natural-fibre performance fabrics.
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