A quick guide to synthetic fabrics for outdoor gear

Julia Clarke in the The North Face Women's Flex Mid Rise Tight
Nylon? Polyester? Acrylic? What does it all mean and is any of it recyclable? We explain with our quick guide to synthetic fabrics for outdoor gear (Image credit: Julia Clarke)

Here at Advnture, we’ve spent more than our fair share of time extolling the benefits of natural fabrics, such asmerino wooland, to a lesser degree,bamboo rayon, in our outdoor gear. Not only are they high performing (think, moisture wicking and breathable) and kind on your skin, but they’re better for the planet, too, even if all manufacturing comes with a cost. However, we’re aware that a lot of your favoritehiking pantsand jackets are made using synthetic fabrics, and you may be interested to know more about the unique properties of these materials, as well as their advantages and disadvantages, when next shopping for new gear.

Synthetic fabrics have been around for decades and are widely used in textiles because they’re cheaper than natural fibers, and typically more durable. They’re often lightweight,water-repellent,moisture-wickingand quick-drying, which makes them especially valuable when it comes to outdoor gear that you’re going to battle the elements in, such asbase layersandsynthetic puffer jackets. However, as you may know, synthetic fabrics are made using fossil fuels, which makes them intrinsically troublesome for the environment and we won’t try to sugar coat that here. With a new focus on sustainability, however, moves are being made to find ways to recycle synthetic fibers, and we’re hopeful that new solutions will be found soon.

Hiker smiling in waterproof jacket

Synthetic fabrics have been around for decades and are widely used in textiles because they’re cheaper than natural fibers, and typically more durable (Image credit: Getty)

Read on for our quick guide to synthetic fabrics for outdoor gear to help you understand what the label on your clothing really means for its performance, learn what to look for in different types of gear, and get real about the impact of your clothing on the environment.

Nylon

Nylon was the world’s first fully synthetic fiber, making its entrance in the world back in 1938 at the World Fair in Flushing Meadows, NY and creating a textile revolution. Nylon is actually the name for a family of synthetic polymers composed of polyamides, and you may see it listed as such on the label of your newwaterproof jacket. In clothing, it was first used to make stockings due to its silky feel at a lower cost, but its natural flexibility doesn’t mean it’s fragile – rather, it’s an extremely tough and abrasion-resistant fabric so you’ll see it inhiking backpackssuch as theGregory Katmai 55and clothing likeAlpkit Nautilus waterproof hiking pants.

Nylon is naturally stretchy, doesn’t wrinkle easily, holds up to a lot of machine washing and generally lasts a long time. It is also moisture wicking, which is why you so often see it as an ingredient in running gear from thebest running socksto tops like theArtilect Sprint Tee. Furthermore, it’s naturally water-resistant, making it ideal for outerwear like theMontane Pac Plus XT waterproof jacketand, and evensleeping bagsandbivy sackslike theRAB Trailhead Bivi. However, its breathability really varies depending on the yarn width and weave

Hiker approaching Skiddaw in the Lakes

尼龙是一个极其艰难和抗磨fabric so you’ll see it in hiking backpacks (Image credit: Getty)

Nylon doesn’t have the odor control properties that we enjoy in our merino wool gear, so expect to have to wash thatrunning jacketevery couple of days, but the good news is that the smell usually washed out completely leaving it fresh for your next trot.

So nylon makes a great choice for running, hiking and camping, all things we love, but is it a planet-friendly choice? Well, you can find garments such as theMontane Alpine Resolve jacketwhich are made using recycled nylon and reducing the amount of resources required. it is not biodegradable, so if you throw that old pair of nylonrunning shortsin the landfill when you’ve worn out the elastic waistband, it will be there forever, but hold your horses there, because nylon is recyclable. It is made from plastics and thereforecantechnically be recycled with other plastics. This is made more difficult if it’s mixed with fabrics that aren’t recyclable (see: elastane, below) but nylon is naturally stretchy so may not need the added stretch.

Anyway, don’t just chuck it in your local recycling bin without checking first. Find out if your recycling center will take it, and if they won’t, research outdoor gear companies that are accepting old garments for recycling.

Woman in waterproof jacket

Nylon makes a great choice for running, hiking and camping, all things we love, but is it a planet-friendly choice? (Image credit: Getty)

Polyester

Polyester gets a bit of a bad rap as being an ingredient in cheap, uncomfortable clothing, and while that may be true, it’s also a component in a lot of high-performing sports gear. It’s also essentially made from plastic and was invented by some British chemists a few years after nylon and heralded for its wrinkle-free appearance in men’s suits.

Polyester shares a lot of the same qualities as nylon – it’s lightweight but strong, easy to care for and naturally water-repellent, which is why it’s used in all types of outdoor gear includingdown jacketslike theNathan Sports BFF Puffer Jacketwhile it’s silky feel makes it common insleeping bag liners.

Where you’ll most often see polyester in outdoor gear, however, is as the main ingredient in fleece. That’s right, whether it’sPolartecor generic, yourfleece jacket, fleece-linedhiking glovesand hat are all woven from polyester.

Patagonia Men’s Better Sweater 1/4-Zip Fleece

Where you’ll most often see polyester in outdoor gear is as the main ingredient in fleece (Image credit: Craig Taylor)

Polyester is generally not considered a breathable fabric, so a base layer made using polyester can feel clammy if you work up a sweat in it, however it is moisture-wicking and does dry quickly. Like nylon, it gets stinky when you workout in it, but unlike nylon, that smell can build up with repeated wear and washing. It’s also notorious for building up static when it’s not blended with other fabrics, so expect that crackling noise when you pull a polyester shirt on.

In terms of sustainability, polyester can be made using recycled plastics, but these fibers are not infinitely recyclable. When you’ve finished with a pair ofrunning leggingsmade with polyester, they’re generally not recyclable at this time either, especially since the polyester is typically blended with other fabrics.

Female jogger enjoying sunny day during urban workout

When you’ve finished with a pair of running leggings made with polyester, they’re generally not recyclable at this time (Image credit: Westend61)

Acrylic

Unlike nylon and polyester, which mimic the feel of silk, acrylic is generally used as a wool substitute. Invented in the 1940s and also made from plastic, it’s commonly used in carpets and sweaters, and in outdoor gear, you’ll see it inbeanie hatslike theRab Logo Beanie和徒步旅行ski socks, such as theFalke SK2s.

It looks and feels a lot like wool, but it doesn’t necessarily behave the way wool does. It is lightweight, soft and hydrophobic like wool, but it’s not as warm as wool and is far from breathable, making it less than ideal in clothes you’re going to get sweaty in. It also gets very smelly as opposed to wool’s natural odor-resistance.

Like polyester, it tends to build static and acrylic fabric is also highly flammable, making it a poor choice for anything you might wear near acamping stove. It’s often seen as a better alternative for those who are sensitive to wool, however theCDC(opens in new tab)has indicated it as a possible cancer risk and recommended it not be worn in direct contact with the skin which is a bit alarming, to say the least.

Further, it’s neither biodegradable nor recyclable, so besides being cheap, there aren’t a lot of great arguments for having a lot of acrylic gear in your closet.

Smiling woman in mountains

Acrylic looks and feels a lot like wool, so it's used in a lot of beanie hats (Image credit: Johner Images)

Elastane (Lycra and Spandex)

Elastane is the generic term for brands of stretchy fabric such as Lycra and Spandex. Needless to say, then, elastane is a highly elastic fabric. It was invented in 1930s Germany and made from plastics. It pops up as a supplementary component in all kinds of outdoor gear that you’d want to have a little give, from running leggings tosports brasandhiking socks. In fact, it’s hard to imagine life outdoors without a little elastane in our clothing, thoughEdmund Hillarysummited Everest before it became widely used, so it must have been possible.

Elastane can be breathable, depending on the weave, and moisture wicking, but it’s used in smaller amounts primarily to give your clothing enough give that it doesn’t restrict your movements on the hill or at the crag, so these properties are less important than they are in the main fabrics. In garments that you’d want to have a lot of stretch, such as leggings, look for a higher stretch content of around 10 percent but you might avoid it in outerwear that you want to hold its shape. It’s not the most durable of the fabrics on this list, and does eventually break down.

弹力不是可生物降解,不是现在recyclable either, making it problematic for the environment. You can get round this by choosing nylon and merino wool garments such as theEDZ Merino Base-Layerwhich has zero elastane but plenty of natural stretch.

Julia Clarke

Julia Clarke is a staff writer for Advnture.com and the author of the bookRestorative Yoga for Beginners. She loves to explore mountains on foot, bike, skis and belay and then recover on the the yoga mat. Julia graduated with a degree in journalism in 2004 and spent eight years working as a radio presenter in Kansas City, Vermont, Boston and New York City before discovering the joys of the Rocky Mountains. She then detoured west to Colorado and enjoyed 11 years teaching yoga in Vail before returning to her hometown of Glasgow, Scotland in 2020 to focus on family and writing.