Acrylic is a decent material for certain types of clothing, particularly cold-weather knits like sweaters, scarves, and hats, but it comes with real trade-offs. It was designed to mimic wool at a lower price point, and it succeeds at that in some ways while falling short in others. Whether it’s “good” depends on what you’re wearing it for, how much you want to spend, and how much you care about durability and environmental impact.
What Acrylic Actually Is
Acrylic is a fully synthetic fiber made from petroleum-based chemicals. The fiber is engineered to look and feel like wool: soft, lightweight, and warm, with a slight sheen. It’s produced by spinning a polymer solution into fine threads, which are then woven or knit into fabric. The textile industry has marketed it under names like “Cashmiron” to emphasize that wool-like quality, and when you touch a well-made acrylic sweater, the resemblance is genuinely close.
Most acrylic clothing you’ll find is knitted rather than woven, which is why it shows up so often in sweaters, beanies, socks, and blankets. You’ll also see it blended with wool or polyester to bring the cost down while keeping some of the feel of natural fiber.
Where Acrylic Performs Well
The strongest case for acrylic is warmth at a low price. A 100-gram skein of acrylic yarn costs roughly $2.50 to $4.00, while the same weight in wool starts around $6.00 and can run past $12.00 for premium grades. That means an acrylic sweater can cost a fraction of a comparable wool one. For people who want cozy cold-weather layers without a big investment, acrylic delivers.
Acrylic is also lightweight relative to how warm it feels. It holds its shape well after washing, resists moths and mildew (since bugs aren’t interested in eating plastic), and won’t shrink the way wool can if you accidentally toss it in a hot dryer. It’s a low-maintenance fabric: machine washable, quick to dry, and generally easy to care for. Colors tend to stay vibrant through repeated washes because synthetic fibers accept dye differently than natural ones, locking pigment into the polymer structure during manufacturing.
For people with wool allergies or sensitivity to animal fibers, acrylic provides a similar warmth and texture without the itch.
The Breathability Problem
Acrylic’s biggest weakness as a clothing material is that it barely absorbs moisture. Natural fibers like cotton and wool pull sweat away from your skin and hold it within the fiber structure, which helps regulate your temperature. Acrylic doesn’t do this. It has very low moisture regain, meaning sweat sits on the surface of the fabric or on your skin rather than being absorbed.
In practice, this makes acrylic a poor choice for anything involving physical activity or warm weather. An acrylic base layer under a winter coat can leave you feeling clammy once you start moving. A cotton or merino wool alternative in the same situation would handle that moisture far better. If you’re just sitting around the house or walking to the car, this matters less. But for active wear, acrylic is one of the worst options.
Pilling Is a Real Issue
If you’ve ever owned a cheap acrylic sweater, you’ve probably noticed those tiny fiber balls that form on the surface after a few wears. This is called pilling, and acrylic is particularly prone to it. In standardized abrasion tests using a Martindale device (the industry standard for measuring fabric durability), acrylic-blend knits have scored as low as grade 2 out of 5, where grade 5 means no pilling at all. A grade 2 means noticeable, dense pilling that makes the garment look worn out quickly.
Pilling doesn’t ruin the function of the clothing, but it makes it look shabby. You can remove pills with a fabric shaver, but you’re essentially shaving off material each time, which thins the fabric over its lifetime. Higher-quality acrylic garments with tighter knit construction will pill less, but the tendency is built into the fiber itself. Wool pills too, but wool pills tend to fall off naturally over time, while acrylic pills cling stubbornly to the surface.
Odor and Bacteria
Synthetic fabrics in general have a reputation for getting smelly faster than natural ones, and acrylic is no exception. The issue isn’t that more bacteria grow on acrylic compared to other fabrics. Research on textile malodor has found that the specific bacteria responsible for the worst body odor smells don’t colonize acrylic any more aggressively than cotton or wool. The problem is subtler: because acrylic doesn’t absorb moisture well, sweat and its byproducts tend to sit on the fiber surface, where they’re more noticeable to your nose. Natural fibers trap odor molecules inside the fiber structure, effectively containing the smell until the garment is washed.
If you wear acrylic in situations where you sweat, expect to wash it more frequently than you would a wool garment.
Environmental Concerns
Acrylic is a plastic, and it carries the environmental baggage that comes with that. It’s made from fossil fuels, it doesn’t biodegrade in any meaningful timeframe, and it sheds microplastic fibers every time you wash it. Research published in Environmental Science and Pollution Research found that acrylic knit fabrics release roughly 900 fibers per garment per wash cycle, on par with nylon and polyester knits. Those fibers are small enough to pass through wastewater treatment and end up in rivers and oceans.
This doesn’t make acrylic uniquely terrible among synthetics. Polyester fleece, for example, sheds far more fibers per wash. But if reducing your plastic footprint matters to you, acrylic is firmly on the “more impact” side of the ledger compared to cotton, wool, or linen. Using a microfiber-catching laundry bag can reduce shedding, though it won’t eliminate it.
When Acrylic Makes Sense
Acrylic works best in a narrow set of situations. It’s a reasonable choice for:
- Budget knitwear. Sweaters, scarves, and hats where you want the look and feel of wool without the price tag.
- Low-activity cold weather wear. Lounging at home, light outdoor use, or layering pieces you won’t sweat in.
- Allergy-friendly alternatives. When wool or other animal fibers cause skin irritation.
- Items that need easy care. Machine-washable, no shrinkage, no special detergent required.
It’s a poor choice for activewear, base layers for hiking or skiing, warm-climate clothing, or any garment you want to last many years without looking worn. For those uses, cotton, merino wool, or performance polyester blends will serve you better.
Acrylic Blends vs. 100% Acrylic
Many garments aren’t 100% acrylic. You’ll often see blends like 50% acrylic and 50% wool, or acrylic mixed with polyester or cotton. These blends can offset some of acrylic’s weaknesses. Adding wool improves moisture handling and reduces pilling. Adding polyester increases durability. If you’re shopping and see a blend with 30 to 50 percent acrylic, you’re getting a fabric that’s cheaper than pure wool but performs noticeably better than pure acrylic.
Check the label and consider the blend ratio. A sweater that’s 70% wool and 30% acrylic will behave much more like wool than acrylic. Flip those numbers, and you’re essentially buying an acrylic sweater with a touch of wool marketing.