Mainstays 100 Acrylic Yarn: What It Is and How to Knit With It

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Mainstays 100 acrylic yarn is a budget-friendly, 100% acrylic yarn sold through Walmart’s Mainstays line. It is a medium-weight yarn that works well for blankets, hats, scarves, and beginner projects, but it behaves differently from wool or premium cotton blends. Knowing how acrylic fibers stretch, pill, and hold color will help you pick the right pattern and get a finished piece you are happy with.

What Mainstays 100 Acrylic Yarn Is Good For

Acrylic is a synthetic fiber made from petroleum-based polymers. It is lightweight, washable, resistant to moths and mildew, and available in a huge range of colors. Those qualities make acrylic a practical choice for items that will be washed often, such as baby blankets, dishcloths, and community-project afghans.

Because acrylic is inexpensive to produce, the yarn usually comes in large skeins with generous yardage. That makes it appealing for projects that need a lot of material, like a throw blanket that might take 1,000 yards or more. Manufacturers often describe their acrylic yarns as machine washable and dryer safe on low heat, but you should always check the specific label on your skein.

Factors That Affect How the Yarn Knits Up

Acrylic does not behave exactly like wool. A few characteristics show up again and again in knitters’ experiences with budget acrylics:

• Fiber structure. Acrylic is smooth and somewhat slippery. That can make stitches look neat, but it can also cause stitches to slide off the needle tip if you are working with very slick metal needles.
• Stretch and recovery. Acrylic has less natural bounce than wool. Items knit in plain stockinette can stretch out over time, especially at the cuffs and hems of hats and sweaters.
• Pilling. Acrylic can pill, meaning small fiber balls form on the surface through friction. Pilling is most visible on areas that rub, such as sleeves, armpits, and the bottom of bags.
• Heat sensitivity. High dryer heat can melt or distort acrylic fibers. Low heat or air drying is safer.
• Gauge. Acrylic often knits to a slightly different gauge than a wool of the same listed weight, so swatching before a large project is essential.

How to Get the Best Results With Acrylic

Most of the common complaints about budget acrylic come down to technique and finishing rather than the fiber itself. A few simple habits can make a noticeable difference.

1. Knit a 4-inch by 4-inch swatch in the stitch pattern you plan to use, then block it the same way you will block the finished piece.
2. Measure the swatch after it has relaxed. Compare your stitches per inch and rows per inch to the pattern gauge, and change needle size if needed. Acrylic often needs a size or two smaller than a wool pattern suggests to reach the same fabric density.
3. Choose a slightly bouncier stitch pattern, such as seed stitch, moss stitch, or ribbing, for hats and cuffs. These resist the stretch that plain stockinette can develop.
4. Use a needle with a bit of grip, such as a wooden or bamboo needle, if your stitches slide too easily on metal.
5. Wash the finished item once in lukewarm water with mild detergent, then lay it flat to dry. Acrylic usually relaxes and softens after a wash.
6. To reduce pilling, avoid wearing or tumbling the item against rough surfaces and remove pills with a fabric shaver when needed.

Choosing Patterns and Needles

Mainstays 100 acrylic yarn is a good match for worsted-weight patterns. Bulky projects can work too, but they use a lot of yardage. For beginners, a simple garter-stitch dishcloth or a basic stockinette hat makes a good first project, since the yarn’s smoothness helps you see your stitches clearly. Pattern designers frequently specify wool or cotton, so when you adapt a pattern, keep an eye on the drape and stitch definition you expect.

If you are knitting a sweater or any garment that needs structure, consider a stitch pattern with texture, like cables or ribbing, rather than plain stockinette. Texture hides minor unevenness and gives the fabric more body.

What We’d Use

For a budget acrylic that handles the same tasks as Mainstays, a few well-known options are worth comparing:

• Lion Brand Vanna’s Choice: a popular worsted acrylic with a soft hand, good for blankets and everyday accessories. View on Amazon
• Red Heart Super Saver: a long-running budget acrylic available in many colors, suited to large projects and charity knitting. View on Amazon
• Caron Simply Soft: a light, soft acrylic that many knitters choose for baby items and garments worn against the skin. View on Amazon

Related questions

Is Mainstays 100 acrylic yarn good for beginners?

Yes, in most cases. Its smooth fiber and clear stitch definition make it easy to see mistakes, and it is widely available in worsted weight, the most common beginner weight.

Can you put Mainstays acrylic yarn in the dryer?

Acrylic can often tolerate a low-heat tumble, but check the label on your specific skein. High heat can distort the fabric or melt fibers, so air drying is the safer choice.

Why does my acrylic project pill so quickly?

Pilling comes from friction and is more common in areas that rub against other surfaces. Choosing a tighter stitch pattern and removing pills with a shaver can reduce the problem.

Does acrylic stretch out over time?

It can, particularly in hat brims and cuffs knit in stockinette. Using ribbing or seed stitch at those edges usually helps the piece keep its shape.

Should I use a different needle size with acrylic?

Often, yes. Many knitters find they need a needle one or two sizes smaller than a wool pattern suggests to match the gauge, so always swatch first and measure carefully. If you have health concerns about synthetic fibers or allergies, consult a healthcare professional before wearing items against your skin for long periods.

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