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Scientists Are Finding Microplastics Inside Human Bodies. Nobody Is Talking About Where We Sleep.
Note: You have probably thought about your water and your food packaging. Most people have not thought about what is resting against their skin for eight hours every single night.
The microplastics conversation we are having
Researchers have been finding microplastic particles in places that were unthinkable even a decade ago. Human blood. Lung tissue. Placentas. Breast milk. The walls of arteries. The question of how exactly they got there is still being studied. The question of whether they are there is settled science.
Most of the practical conversation around reducing exposure has focused on drinking water, glass and stainless steel bottles, water filters, and avoiding plastic food containers heated in a microwave. These are reasonable and documented sources. But there is a significant exposure source that almost none of these conversations mention.
What you sleep under.
What Synthetic Fabric Actually Is
Polyester is polyethylene terephthalate, a form of plastic. Nylon is a synthetic polymer. Acrylic is a petroleum based plastic fiber. These materials are cheap, durable, and used in the majority of bedding sold in the US today, including blankets, duvets, and duvet covers.
"The average adult spends 7 to 9 hours in direct contact with their bedding every night. Most of that bedding is made from plastic."
When synthetic fabrics are washed, they shed microplastic fibers into wastewater. This has received some coverage in the context of ocean pollution. What has received almost no coverage is what those same materials shed during use, rubbing against your skin, your face, your lips, and your airways for seven to nine hours every night.
Microfibers from synthetic fabrics break off with friction during normal use. They become part of the particulate in the air in your bedroom. They rest directly against your skin at one of the longest, most uninterrupted points of contact in your entire day.
The Hours Add Up
8 hrs
Average time spent in bed per night in direct contact with bedding material.
365
Nights per year. Most people sleep under the same blanket for several years.
0
Microplastics shed by 100% natural cotton. Plant fiber. No plastic.
This is not an alarm about your blanket causing a specific disease. The research on health effects of microplastic exposure is ongoing and the science has not drawn those conclusions yet. What it is is a calculation. You spend more time in contact with your bedding than with almost any other material in your life. If that material sheds microplastic fibers, that is a significant and consistent source of exposure that most people have never considered.
And it is one of the most straightforward exposures to change.
What Natural Cotton Does Differently
Cotton is a plant fiber. Muslin cotton is a loosely woven form of it that has been used for centuries in contexts where direct, prolonged skin contact matters, from medical gauze to infant clothing to bedding in warm climates.
100% natural cotton, a plant fiber
Sheds cellulose, not synthetic fiber
Open weave that keeps air moving
Softer with every single wash
Machine washable, hang to dry
When 100% natural cotton wears and sheds with use, it sheds cellulose. Plant material. No synthetic fibers, no microplastics, because there is no plastic in the fabric to begin with.
The open weave structure of muslin also creates airflow that synthetic blankets cannot replicate, which is a separate and practical benefit for anyone who runs warm at night or wants a fabric that breathes rather than insulates.
Not polyester, which is a form of plastic
Not nylon, not acrylic, not a synthetic blend
No plastic fibers in the fabric to shed
Not a blanket that insulates instead of breathing
What I Switched To
After a week of looking at what I was actually sleeping under and calculating how much time I spent against it, I replaced my polyester blanket with The Fleece Company's Muslin Blanket. 100% natural cotton. No synthetic materials in the fabric.
The first thing I noticed had nothing to do with microplastics. It was genuinely soft in a way I had not expected from a loosely woven fabric. The kind of worn in softness that cotton develops over months of washing, except it felt that way from the first use. The second thing was how light it is. It does not add insulation the way synthetic blankets do, which matters more than I realized once I stopped sleeping under one.
The third thing, which took a few weeks to notice, was that I was waking up less hot. Less of that built up warmth that accumulates under synthetic material. Less of the morning puffiness I had stopped attributing to anything in particular.
It is one small material change. That is all it is. But given how many hours you spend against your bedding every year, small material changes in that category are worth making.
What Customers Are Saying
retains its texture and warmth
“This blanket exceeded expectations in both comfort and quality. The fabric is incredibly soft to the touch, with a luxurious weight that makes it ideal for colder evenings. Stitching is neat and durable, and even after multiple washes, it retains its texture and warmth. A highly recommended addition to any home setting.”
I sleep comfortably without overheating
“This muslin blanket feels incredibly soft and breathable. I sleep comfortably without overheating, and it looks beautiful on my bed every single night.”
It drapes nicely, washes well
“Lightweight yet cozy, this blanket is perfect year round. It drapes nicely, washes well, and feels even softer over time.”
gets softer every time I wash it
“It's so light but still keeps me warm, and it actually gets softer every time I wash it. Looks gorgeous on my bed too.”
Still Not Sure? A Few Honest Answers.
Will it cover my bed like a normal blanket?
The muslin blanket is designed as a breathable layering piece, proportioned as a generous throw rather than a floor to edge bed cover. If you want edge to edge coverage that tucks in on all sides, this is not the right product for that. If you want a soft, breathable cotton layer to pull over yourself at night, it works well. Check the exact measurements on The Fleece Company's product page before ordering.
Is it really 100% natural cotton with no synthetic materials?
Yes. The Fleece Company's Muslin Blanket is made from 100% natural cotton muslin. No synthetic blends, no polyester, no plastic fibers.
Does it actually get softer over time or is that a marketing claim?
Muslin cotton genuinely softens with each wash. The open weave structure means the fibers become more supple rather than breaking down. This is a real property of the material, and multiple customers mention noticing it after the first few washes.
How long does delivery take?
US orders typically arrive within 8 to 12 business days. The blanket ships from a warehouse overseas, so it is not next day delivery. If you are buying for a specific date, leave a couple of weeks of lead time.
What is the return policy?
The Fleece Company offers a 100 night satisfaction guarantee. Check the current terms on their website before purchasing, as conditions apply. Contact their support team directly with any questions.
The Simplest Version Of This
You are going to sleep under something every night. If that something is made of synthetic plastic fibers, it is shedding microplastics against your skin during the single longest period of uninterrupted contact you have with any material in your life.
Switching to 100% natural cotton removes that source entirely. The blanket is softer. It breathes better. It costs less than most alternatives you are considering for microplastic reduction. And it is the one that actually sits against your skin all night.
A quick note on sizing: these are named by bed size, not by how much blanket two people actually need. Full covers one person on the couch. Queen covers a queen bed for one sleeper. If two of you are pulling on it, go up to King or King XL. Torn between two sizes? Go bigger, nobody has ever complained that a blanket was too big. You get 100 nights to decide.
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