Is polyester warm enough? Everything you need to know!

Is polyester warm enough?

Ever wonder if polyester is warm enough? Can you wear polyester in the wintertime? Well, it's time to find out! It does an excellent job of trapping heat and wicking moisture away from the skin.

It also has a good reputation for durability and comfort, which can be important when you're wearing your winter coat all day long. Cold weather can be very damaging to the skin.

So if you're looking for something that will keep your body nice and warm, then this article will help. First, we'll discuss all the polyester and is it worth it and warm enough or not?

Let's read the article and find out more about polyester.

Table of Contents

What is a Polyester?

Polyester is a synthetic fiber that is used to make fabrics. The fibers are typically spun into yarn to create a flexible material, woven or knitted into several different fabric types.

Polyester fibers are resilient and resistant to heat, which is why they can be used as a material to make clothes, drapes, and upholstery.

Some polyester materials are stretchy, which can be suitable for activewear. Whereas other materials may offer better insulation, making them ideal for winter coats or outerwear.

Some common examples of items made with polyester include sportswear (professional athletes rely on the durability and moisture-wicking abilities to keep them cool), underwear (especially sports bras), pantyhose/tights/leggings, raincoats, and jackets.

Generally speaking, you should feel comfortable wearing any winter clothing that contains some percentage of polyester in it.

That being said, there is a big difference between wearing a nice sweater and donning a full-body ski suit.

Is Polyester Warm Enough?

Yes! It depends on the type of polyester material you have in mind. You can find lightweight synthetic fibers as well as heavier materials that will keep you very warm. In other cases, some polyesters are designed to trap body heat, while others are made to move sweat away from the skin.

It just depends on what type of clothing you're buying or making. Suppose you have a cold climate in mind. Then it's best to choose polyester that is thicker and will keep your body heat contained.

 Whereas if you're somewhere where it tends to be milder, lightweight material may be more suitable for your needs.

Polyester outdoor equipment is popular because it is inexpensive, durable, and lightweight. In addition, synthetic fibers like polyester can be cleaned quickly and dry fast after exposure to water or sweat.

So it's like a material that doesn't make you feel uncomfortable inside.

How does polyester work?

woman wearing a polyester sweater

Polyester mainly works through its construction. So, for example, if you have a very thick sweater and made of 100% polyester.

It will feel much warmer than something that has a similar weight but is made of 20% polyester/80% cotton.

That happens because the fiber traps the body heat and keeps it close to your skin. Then, your body can use its core temperature to warm up the entire garment.

That is why some people will say that wearing layers and multiple fabrics helps with warmth, too (because you're allowing your body to trap certain bits of heat selectively).

Polyesters also work by wicking away sweat from the skin, which allows for better evaporation. You'll find many uses where this works well, such as athletic gear or outdoor wear.

The other way polyester can work is by moving air. For example, if you have a window open and the cool breeze starts to come in. Y

ou can rest assured that your polyester jacket will keep the wind chill off of you better than some other materials. That is especially true since polyesters are more durable than many different types of fabrics.

Fundamental Properties and features of polyesters


The durability of polyester can vary depending on the specific type of fabric. However, in most cases, you'll find that polyesters are pretty strong and can stand up to regular wear and tear.


Since many kinds of polyester hold body heat so well, they'll also absorb moisture from your skin and move it to the outer layer, where it can evaporate more quickly.

That means that you won't feel cold or uncomfortable during a workout or while at work!

Easy to clean

Let's face it, we all sweat, and sometimes things spill on us when we least expect it. It just happens! Because polyesters are machine-washable, cleaning them is simple and easy (and they're


Some types of polyester are designed to protect you from rain or other splashes (think raincoats, gear for hiking). Hence the "water-resistant" feature. Other forms of polyesters may not be 100% waterproof, but they'll certainly hold up better than cotton when put under duress!


Similar to durability, the strength of a specific type of polyester will depend on its makeup. However, you can generally guarantee that most kinds of this fabric are slightly more potent than various other types, including natural fibers like cotton and synthetics like nylon.

Low Price

One of the best things about polyester is that it's relatively affordable compared to other types of fabrics. If you're working within a budget, this factor can be significant.


Polyester is still considered a "high-end" fabric, so you'll find that many clothing brands use it to create stylish and classy garments.

Last but not least, polyesters are very easy to work with, so they excel in the realm of crafting and sewing. That way, you can focus on having fun or creating a lovely gift.


Any weather will suit these polyester clothes. So, for example, if you want to go for a hike on a sunny day, but it's chilly outside, don't worry!

Your polyester clothes will give you all the warmth you need without making your body work too hard. The only problem with this fabric is that it takes time to dry since it readily absorbs liquids.

On top of all these great qualities and features, polyesters are also:

Resistant to mildew and rot

Yes, These features of polyesters are great for all fabrics. It can resist mildew and rot from forming even when exposed to humidity or water for long periods.

Non-allergenic (in most cases)

Polyesters are not made from animal products. That means that people who might react to the natural fibers (such as wool or silk) will have a better chance of being okay with this material.

Hypoallergenic (in some cases)

Hypoallergenic means that this fabric is less likely to cause an allergic reaction in people who typically have problems. It does not mean that it's hypoallergenic (meaning 100% guaranteed). But it is better than organic fiber-produced clothing.

It does not burn quickly and is flame-resistant

The polyester fabric has a low permeability to oxygen and has a high melting point. As a result, the material does not burn quickly and is flame-resistant, making it helpful in making fireman's protective clothing.

Machine-washable (and dryable in some cases)

Most polyesters can be washed and dried just like your other clothes. If you want to save time and storage space, this is a real advantage.

Will Polyester work as an insulator?

Insulation means trapping something inside it. So, if you're trying to stay warm, then insulation is undoubtedly helpful.

For example, wearing a coat with some insulation materials in the lining will trap your body heat. And keep you nice and warm on a cold winter day.

So, does polyester have insulating abilities? Yes. In many cases, it's one of the more efficient insulators available on the clothing market today.

Polyesters are usually made from plastic-type materials. So they can be engineered to do all sorts of valuable things such as hold in body heat or wick away sweat. As a result, many pieces of clothing utilize these properties.

Is polyester warmer than cotton?

That depends on the type of polyester and what you're trying to do with it.

Those pieces that are made to hold in body heat will work better than cotton or wool materials. The main reason for this is because, unlike these fabrics, polyesters don't absorb much moisture (which can seriously screw up how well a garment performs).

Additionally, it would be best to point out that combining different types of textiles into one piece is also possible. For example, using a blend of polyester and cotton can yield some excellent results.

That is especially true since each material tends to accentuate the benefits of the other one. (similar to how adding chocolate chips to cookie dough makes things taste better).

What are the advantages of polyester?

There are many reasons to choose polyester fabrics.

For example, they can be made super lightweight, which makes them ideal for hot summers. Or you could go with something heavier to trap in heat on cold days. But, again, depending upon what type of clothes you're trying to make.

Another big reason is durability, unlike cotton or wool clothing, which tends to wear down pretty quickly. (Especially if you're doing something that involves lots of friction).

Polyesters are better at resisting damage and having fibers break apart over time. (which keeps your clothes looking nice).

And finally, polyesters work well when it comes to insulating ability. As mentioned above in this post, you'll find many uses where this works well, such as athletic or outdoor wear.

What are the disadvantages of polyester?

There aren't too many disadvantages to using polyester fabrics. However, there are some cases where it's ideal to go with something else. (especially if you're trying to breathe well or not sweat). One big reason is that they don't allow much room. So it can make for a rather stuffy experience.

To counteract this, you can easily use lighter colors when designing your clothes, allowing more air to reach the skin. Or you could go with mesh underlays or other soft materials in critical areas. 

Where you need better airflow, the choice is yours, depending upon what type of design you want.

Another disadvantage that occurs mainly with polyesters is that they aren't the best to use if you're trying to stay dry. However, as mentioned above, it can be great for blocking out wind or other bad weather.

But it's less effective at wicking away sweat. So depending upon what type of fabric you want, you could go with another material instead (such as cotton).

Is it a breathable fabric? By and large, polyester fabrics are not great when it comes to airflow.

To fix this problem, you can go with a looser style of clothing. Or add meshes or underlays in critical areas such as the chest, arms, and back to help get better circulation. You could also pick lighter colors that will allow more air to reach your skin.

Ways to clean polyester

One easy way to clean polyesters is to take care of things right when they get dirty. For example, laundering your clothes soon after wearing them will help remove most of the junk that gets absorbed.

If you're looking to clean something sitting for a while, then using laundry detergent is recommended. Just be sure to follow the instructions on your specific machine. So you don't damage anything or cause any harm to yourself or others around you.

Other options include cleaning polyesters with warm water and vinegar (mixed in equal parts). That should help remove dirt and other things that can ruin how well your clothes work (and keep them smelling nice).

It's also possible to use baking soda as another option if needed. But, of course, you should test everything out first before applying it to an entire load of clothes.

For those who like easy methods over buying chemicals, you can use a dry wash as a solution.

Does Polyester Shrink?

The answer is No. It won't shrink any more than your average synthetic material. So it's possible to take any clothes that you buy and wash them as usual.

The only reason a polyester might shrink is due to the type of material being used. For example, if there are other fabrics (wool, cotton) used alongside it. Then they may have a different level of shrinkage.

Or it could be due to going through a stress test before being sold in stores or online. In those cases, the makers might purposefully force the fibers into tighter positions which could cause damage when put through its first cycle.

Can Polyester Protect You From Water?

One thing that polyester is excellent at protecting you from is water. However, this isn't something that it's able to accomplish by itself. Instead, it works alongside other materials (such as nylon).

The reason for this has to do with how the material was made. Polyesters are very tightly woven together, which creates a somewhat waterproof surface. That way, you can stop any liquid or moisture before it can pass through your clothes.

(Note: If your clothes are thinner or have more significant gaps between each fabric thread, then they won't be as effective against lousy weather).

What Polyester Fabric Colors Are Best?

As mentioned above in this post, dark does well under most conditions because of its ability to block out light. That is why black is the preferred color for many types of clothing. The only downside is that it can absorb more heat than other colors (which isn't good if you're trying to stay cool).

When it comes to lighter materials, they can sometimes reflect light depending on how well they were treated before being sold. So if you want more delicate clothes instead, be sure to look at their material grade closely. 

It's the number one thing that determines how helpful polyester will be against the light (which makes it easier to see through).

Do I have to choose cotton or polyester?

Not necessarily. As mentioned above, it all comes down to what you want out of your clothes. Ideally, cotton is one of the best materials for keeping you cool in warmer weather because it has a lower melting point than polyester.

But if you want heavier fabrics that can protect you from water or other harmful elements, then polyester will be a good choice.

A Polyester garment is lighter and has high air permeability, making it a good choice for warm seasons. Polyester is also more inexpensive than most cotton materials (which is why many companies prefer to use it).

Wool fabrics are more robust than cotton and polyester, but they can be more expensive. Wool also has the benefit of being fire-resistant (which is why you'll see it used in firefighters' uniforms).

Cotton shirts are the best option if you want a breathable material that's good for hot weather. If you're living in a tropical country, then cotton is one of the best materials to use when it comes to staying cool and comfortable.

What Is Polyester's Best Feature?

While it might not be the most comfortable fabric, polyesters work well when it matters (like in wild and unpredictable weather).

So that is why it makes for one of the best choices available for making clothes.

No matter how often you wear them, all of your outfits will be protected (and still look pretty good, too).

What Is Polyester's Worst Feature?

Almost every type of material has its flaws. For example, cotton can irritate when it rubs against your skin over multiple days.

Meanwhile, polyesters are more likely to become dirty after being worn for a long time.

That doesn't mean that the material is terrible, though. It's just a matter of what you like and wants most in your life.


Polyester is an excellent material to use when you want something that'll hold its shape well. And it works best with other types of fabrics. Especially those that are tightly woven.

But be sure only to use mild laundry soap or dry wash, so it doesn't cause any damage to the clothes.

Also, check out what dye was used before buying anything since harsh chemicals can also ruin this fabric over time.

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