Waterproof Coated Textiles

They're ordinary fabrics — usually polyester or nylon — with something added to keep water out. That something is one of three things: a durable water repellent (DWR) finish sprayed onto the fibres, a thin laminated membrane (like Gore-Tex or polyurethane films), or a solid coating such as polyurethane or PVC. The fabric is the body; the waterproofing is the chemistry. When this material family raises questions, it's almost always about that added layer.

Because staying dry matters — for a child walking to school in the rain, a cot mattress under a newborn, a pram in a downpour. Coatings and membranes deliver reliable waterproofing at low weight and cost, and DWR finishes also shrug off stains and mud. These are genuinely useful products; the goal isn't to avoid waterproofing but to choose how it's achieved.

"Waterproof," "water-repellent," "showerproof," "DWR," or membrane brand names like Gore-Tex and eVent. The chemistry is rarely stated — but absence of information is itself a clue. Brands that have moved away from PFAS advertise it: look for "PFAS-free," "PFC-free," or "fluorocarbon-free DWR." A waterproof claim with no such note means the coating chemistry is unknown, and on older gear it was likely PFAS-based.

Rain jackets and puddle suits, school coats, ski wear, tents, backpacks, and umbrellas; pram rain covers, changing mats, and coated bibs in the baby kit; mattress protectors on every bed; plus outdoor cushions, fabric shower curtains, and coated tablecloths. Most households own a dozen or more coated textiles without thinking of them as a category.

Mostly indirectly. DWR chemicals gradually wear and wash off, ending up in household dust and laundry wastewater; PFAS in particular persists and circulates back through water and food more than through the jacket on your back. Direct skin transfer from coated fabric appears small. For babies, the closest contact points are coated changing mats, bibs, and mattress protectors — though intact polyurethane membranes on these are considered stable.

The reason this category matters is PFAS: it's one of the chemical families with the most consistent evidence of effects worth avoiding around pregnancy, including associations with birth weight and immune response in studies. But the route is mainly long-term environmental build-up, not your raincoat — wearing waterproof gear during pregnancy is not the concern. The pregnancy-relevant move is choosing PFAS-free when buying new, which slowly lowers what's circulating in your home and the wider environment.

Some studies have associated higher PFAS levels in blood with changes in semen quality and reproductive hormones, though findings are mixed and exposures come overwhelmingly from food, water, and dust rather than clothing. Coated textiles are a modest contributor to that background. The same buying-time choice — PFAS-free gear — is the relevant action; nothing about wearing existing rainwear needs to change.

Children own a lot of this category — puddle suits, school coats, pram covers, changing mats, cot protectors — and small bodies plus dust-level living make PFAS reduction more worthwhile for them. Practical priorities: PFAS-free for the rainwear that's replaced every year or two anyway, and a polyurethane-membrane (not vinyl, not unspecified) protector for the cot mattress. A protector is worth keeping — hygiene and mattress life are real benefits — so this is a choose-better situation, not a remove situation.

No specific evidence on coated textiles and older adults. PFAS accumulates in the body over decades, which is a population-wide observation rather than a reason for older adults to treat their rainwear differently.

Three things are well established: PFAS-based repellents have been widely used on textiles; PFAS compounds persist in the environment and accumulate in people; and certain PFAS are associated in human studies with effects on cholesterol, immune response, and birth weight. What's less settled is how much coated textiles contribute to any individual's exposure — food, water, and dust dominate. The regulatory direction is unambiguous, though: PFOA is restricted internationally, and textile-specific PFAS bans are arriving in the EU and US states.

From wearing or using any single waterproof item: low. The seriousness of PFAS is about persistence and accumulation across the whole environment, which is why the fix is happening at the industry and regulation level rather than in anyone's hallway. Your leverage is real but modest: each PFAS-free purchase nudges your household's contribution down. Vinyl-coated items (some mattress protectors, older rain covers) carry the separate PVC questions — worth avoiding where alternatives exist.

PFAS-free DWR finishes — now standard at many outdoor brands — for rainwear and gear. Polyurethane membranes for mattress protectors and changing mats: stable, effective, vinyl-free. Waxed cotton and tightly woven fabrics for lighter showerproofing. Wool for warmth with natural water resistance. For pram covers, PVC-free versions are increasingly labelled. The alternatives genuinely work; modern PFAS-free repellents repel water well, with the honest caveat that they resist oil and stains somewhat less.

Avoiding waterproofing isn't the goal — avoiding unknown coating chemistry is, and that's getting easier every year. PFAS-free options now exist for nearly every item in the category, usually clearly labelled and at similar prices. The hard part is the existing gear in the cupboard, and the answer there is calm: keep using it, and upgrade at natural replacement time. No item in this category justifies discarding something that still works.

Identify the next waterproof purchase your family will actually make — for most parents it's a kids' coat or rain suit before the next school year — and decide now that it'll be a PFAS-free one. Searching the brand name plus "PFAS-free" takes thirty seconds and tells you a lot.

Waterproof gear earns its keep, and nobody should stand in the rain on principle. The shift to make is at the till, not in the wardrobe: PFAS-free rainwear when coats are replaced, polyurethane rather than vinyl for mattress protectors and changing mats, and waxed or woven options where full waterproofing is overkill. The industry is moving your way — this is one category where simply buying the newer, labelled option does most of the work.

The EPA and NIEHS pages on PFAS for the underlying chemistry and health research, ECHA for the EU restriction process, and outdoor-brand transparency pages for who has switched to PFAS-free repellents. See References below.