What are the best fabrics for running?

If you have ever finished a run feeling cold, damp and uncomfortable, or found yourself overheating and tiring sooner than expected, your running kit could have a part to play. Materials that trap sweat, cling to the skin or retain heat can make even an easy run feel harder than it should, while the right fabrics help you stay comfortable and focused from start to finish. Understanding what to look for makes choosing a running kit simpler, whether you are heading out for a quick jog or sticking to the treadmill. This guide looks at the best fabrics for running, what to look for in them and how the right choices can help with common running challenges.

What to look for in a running fabric?

Choosing the right fabric is about knowing which key characteristics improve comfort and performance while running.

• Moisture-wicking: Look for fabrics that pull sweat away from your skin instead of soaking it up. This helps you stay drier during your run and avoids that heavy, clingy feeling afterwards. For better understanding, read our how does moisture wicking work guide.

• Lightweight: The lighter the fabric, the less you notice it while running. Lightweight materials reduce drag and fatigue, especially as your run goes on. To test it, look for a flowing drape and a thin and airy hand-feel.

• Stretch and recovery: Fabrics with stretch move with your body and return to shape after each stride. This supports natural movement and helps prevent pulling, tightness or constant adjusting.

• Low friction: Smooth fabrics with minimal friction help reduce rubbing and irritation, particularly during long, sweaty runs.

• Breathable: Good running fabrics allow heat to escape as you move. This will help regulate body temperature, so you are less likely to overheat or feel flushed halfway through.

Our latest activewear collection is built for light, easy movement, with running tops, shorts, leggings and running essentials made from lightweight woven fabrics. Breathable, moisture-wicking and showerproof, they are designed to keep you comfortable as conditions change.

What are the best fabrics for running?

When shopping for a running kit, certain fabric names come up time and again. Each one affects how your activewear handles sweat, movement and comfort. Understanding these common running fabrics will make it easier to choose the right pieces.

Nylon

You’ll often spot nylon in running wear, and for good reason. It’s super smooth, durable, and built to keep up with constant movement. Plus, as part of our Primark Cares initiative, lots of leggings, crop tops and jackets from our latest activewear drop are made using a minimum of 50% recycled nylon.

• Feels soft against the skin while holding up well to regular use

• Dries quickly and keeps its shape, run after run

• Not the most breathable on its own, which is why it is often blended with other fibres to improve airflow

Polyester

Polyester is one of the most common fabrics used in mesh panel shorts, woven running jackets and crop tops, valued for its lightweight feel and moisture-wicking properties.

• Helps pull sweat away from the skin and dries quickly

• Breathable and comfortable during movement and post-run

Spandex

Spandex is added to running fabrics to give them stretch and recovery. You’ll find it in running socks, sports bras and running leggings for that extra bit of comfort and flexibility.

• Allows fabrics to stretch comfortably and return to shape after each stride

• Supports natural movement and helps prevent tightness

• Does not provide breathability or moisture control on its own, so it is always used in blends

Merino wool

Merino wool is one of those fabrics that quietly works with your body, especially when the weather is cooler or ever-changing.

• Helps keep you warm at the start of a run, then provides breathability as you heat up

• Manages moisture and stays fresh for longer between washes

• Feels heavier than most synthetic fabrics and takes longer to dry

Polypropylene

Polypropylene is perfect for running gear because it helps manage moisture and helps regulate body temperature. You’ll find it in base layers, thermal wear, socks and sports bras.

• Wicks sweat away from your skin and helps it evaporate fast, so you stay dry and comfortable

• Gentle on skin and resists bacteria and mould, helping you feel fresher during intense workouts

• Helps keep warmth in by holding onto heat, making it great for thermal base layers in cold weather

Why fabric blends work better for running

No single fabric can keep up with every step of a run, which is why blends are used. They balance breathability, moisture control, stretch and durability, keeping you comfortable from start to finish. Some of the most popular ones are:

• Polyester + elastane: One of the most common combinations in a running kit. Polyester helps manage sweat and stays lightweight, while elastane adds stretch, allowing the fabric to move naturally with your body.

• Nylon + elastane: Often used in leggings and fitted pieces. Nylon adds softness and strength, while elastane improves flexibility and helps the fabric hold its shape over time.

What are the best fabrics for running in hot weather?

Running in the heat can bring up a few unexpected challenges, from overheating to sweat that just won’t dry. By the end of your run, your top feels damp and heavy and your clothes cling to you. This happens because the fabric is absorbing sweat instead of moving it away. Knowing what’s happening and which fabrics to choose or avoid makes all the difference.

What to look for: Moisture-wicking fabrics like polyester blends that dry quickly and keep you feeling light and dry.

Fabrics to avoid: Cotton or other materials that trap moisture

What is the best material to prevent chafing?

Ever finish a run with sore skin? Friction from clothes on sweaty skin is usually to blame. To avoid this, look for smooth, low-friction fabrics such as nylon blends with a bit of elastane that move with you instead of rough or stiff synthetics that increase rubbing.

What are the best fabrics for running in cold weather?

Cold runs bring their own challenges: from stiff, chilly muscles to damp, clingy layers. You do everything right, with layering and prep, but sweat traps heat the wrong way, leaving you cold and stiff. Running in wet or snowy weather can also make clothing feel heavy, clingy and cold. This happens because water is absorbed into the fabric and doesn’t escape. Picking the right fabrics can help you stay warm and dry.

What to look for: Fabrics that manage moisture while keeping you warm, such as polyester or nylon blends with a soft inner surface. Showerproof or water-resistant fabrics like treated polyester or nylon blends are perfect for rainy days, just make sure they are lightweight, so movement isn’t restricted.

Fabrics to avoid: Cotton or heavy fabrics like absorbent synthetics that can soak up moisture and leave you feeling cold.

How to choose the best fabric for your running style

Running isn’t one-size-fits-all, and neither is your kit. The fabrics that work best depend on how you run, whether it’s a quick sprint, a long-distance rhythm, or a trail adventure. Here’s a guide to fabrics and styling tips for different runner types.

Fabrics for short-distance running

You love the rush of a quick sprint, feeling the wind on your face and your heart racing. Every step is light and fast, and you want your kit to move as freely as you do.

Fabrics to look out for:

• Lightweight, breathable fabrics that keep you cool

• Stretchy blends that move with your body

• Moisture-wicking materials to stay dry and comfortable

Style tip: Pair woven running shorts with our Buttery Soft™ crop top for maximum movement, add reflective details for early morning runs and keep accessories minimal.

Fabrics for long-distance running

You’ve logged the miles and know how to settle into your rhythm, staying focused as the kilometres pass. Comfort and support aren’t optional; they’re what keep each stride feeling effortless during long runs and marathon training sessions.

Fabrics to look out for:

• Moisture-wicking fabrics to manage sweat over longer distances

• Stretch blends that support movement without rubbing

• Lightweight, durable materials that hold up run after run

Style tip: Pair seamless workout leggings with a running vest vest and layer lightly for colder evening runs. Don't forget to take advantage of discreet pockets for small essentials like your keys!

Fabrics for trail running

Crunching leaves underfoot and breathing in fresh air, trail runs demand kit that moves with you over uneven paths and changing conditions.

Fabrics to look out for:

• Durable fabrics that can withstand abrasions

• Moisture-wicking and breathable blends for changing conditions

• Showerproof finishes to help handle wet or muddy trails

Style tip: Choose fitted bottoms and layer your tops so you can adjust as temperatures change, then pair with Foamflex running shoes to support your stride.

Fabric care tips

Taking care of your running kit is just as important as choosing the right fabrics. A few simple habits can keep your gear performing at its best.

• Wash soon after running: Letting sweaty kit sit can break down fibres and trap odour. A quick wash keeps fabrics fresh and effective

• Skip fabric softener: It can coat activewear fabrics and reduce moisture-wicking capabilities and breathability over time

• Use a cool wash: Lower temperatures help protect stretch, shape and technical finishes

• Air dry when possible: Heat from tumble dryers can damage fibres and affect the fit

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FAQs

Is merino wool good for running in summer?

• Yes, merino wool can be a great choice for summer runs because it is breathable and helps keep your temperature in check. It also handles sweat well and stays fresher for longer, even on warmer days.

What is better for running, cotton or polyester?

• Polyester is the better choice for running. It wicks moisture away from the skin and dries quickly, helping you stay comfortable as you move. Cotton absorbs sweat and holds onto it, which can leave you feeling damp, heavy and uncomfortable.

Are compression fabrics good for running?

• Compression fabrics can be helpful for some runners. They offer a supportive, close fit that may help reduce muscle movement and improve comfort, especially on longer runs. The key is choosing breathable, moisture-wicking compression fabrics rather than heavy or restrictive ones. 

What fabrics to avoid?

• Some fabrics can make running feel harder than it needs to be, so it helps to know which ones to skip.

Pure cotton: Absorbs sweat and stays damp

Heavy, non-breathable fabrics: Trap heat and moisture

Low-stretch materials: Restrict movement and comfort