FOX FLEXAIR JERSEY AND PANT REVIEW

August 26, 2026

Fox’s Flexair range is the lightest and thinnest of their line up. Fox uses phrases like “clock minded” in their marketing, stressing that this is not casual attire for everyday riding, but kit designed for chasing margins. Importantly though, Fox have adapted the Flexair Jersey and Pants to work for everyday riders too, not just elite racers. We’ve been logging the miles over the last months, and now it’s time to report on how the Fox Flexair kit withstood the abuse.

ABOUT THE FOX FLEXAIR LONG SLEEVE JERSEY

Super-thin, fabric provides the sensational breathability you would expect but Fox boasts that the Flexair jersey is also tough enough to cope with “blasting through overgrown trails”. Offered in High Vis green or pink and a tamer black or chalk white, the Flexair jersey matches the flexible and breathable attitude of the rest of the Flexair range.

The Jersey uses Polartec Power Dry fabric with Tru Dri technology, to help with temperature management and sweat wicking. Fox delivers four-way stretch and a split hem to help with flexibility, with similar perforations to the Flexair trousers to aid with airflow, and a bonded neck for reduced chafing. As the lightest jersey in Fox’s line up, breathability and comfort are clearly the main priorities for the Flexair. But Fox do claim the Polartech fabric is tough and durable, too.

Available in sizes S-2XL and a wide range of colours, the Fox Flexair Long Sleeve Jersey retails for £69.99 / $104.95.

ABOUT THE FOX FLEXAIR PANTS

Designed to “Climb as well as they descend”, the Fox Flexair pants are built with “Tru Dri” technology to help to keep them breathable and minimize sweat buildup. The pants mix this high tech “Tru Dri” material with low tech, simple solutions, including perforations on the thighs to further help with airflow. A Durable Water Repellent (DWR) finish helps to keep you dry and resists mud sticking.

“Tru Motion” all way stretch allows the pants to have enough flex to pull some Jackson Goldstone-style shapes. The pants also include a bonded waistband to prevent over-stretching and help facilitate a more secure fit, combined with a high-rise design. A “Race ratchet” fastener on the waistband and no fly zipper also keeps things simple and comfy. The pants include two zipped hand pockets and a smaller zipped pocket just behind.

Available in sizes 28-38”, the Fox Flexair pant retails for £150 / $174.95 and is available in a wide selection of colours.

THE DIRT

Whilst the Flexair genes are rooted in world cups, most of us as customers are reluctantly not quite on the level of world cup racers. Fox have struck a good middle ground in the new Flexair Jersey and Pant, taking some of the performance-based, lightweight tech from the racing side of things, and allowing it some breathing room to adapt for day-to-day use.

The Flexair jersey has plenty to praise. All the tech that Fox has crammed in really does show. The Polartec Power Dry fabric is impressive in its low weight, breathability and flexibility, performing well in the heat. Its ability to somehow still keep you fairly warm and insulated against cold breezes really surprised me too. The stretch is great, allowing you to fit chunky body armour beneath and not feel restricted.

Yes, the jersey is a touch on the see-through side, but other than aesthetics, this isn’t an issue due to how good that Polartec fabric is at both insulation and breathability.

I’ve criticised Fox in the past for standing on their reputation at times, making average kits where you’re only paying extra for the Fox logo. This is not the case at all for the Flexair: here, you’re spending the money to get a thoughtfully designed and high-tech jersey. The main place where Fox has failed for me in the past is durability. The Flexair jersey has done really well in this regard. The abrasion resistant shoulder panels are a nice touch but to be honest the Polartech fabric itself is tough enough to take on the punishment of everyday riding. I have bashed through plenty of brambles and thorns and not had so much as a thread pulled out of the jersey yet.

I’m thankful that they have put the pockets on the Pants. If you’re lining up at the top of Mont Sainte Anne with an overall title in the balance, you probably don’t need your phone and car keys in your pocket. But if you’re doing just about anything else, you might want them. The pocket zips do have fiddly Fox tabs that can be frustrating to access with gloves, and to be really picky they also have perhaps a touch too much space, letting larger items like your phone flap about a little. Even so, I’m happy to have them.

To take “Flexair” literally, the flexibility is excellent, and the breathability is as good as the name would suggest. The Flexairs are probably the only pair of trousers I’d wear instead of shorts on a hot summer ride, with the thin fabric and good ventilation on the thighs preventing overheating effectively. They’re far from winter pants, but they offer more warmth than you would expect from such a thin material, too. I put this mostly down to some wind resistance provided from the DWR-finished fabric. This finish does also provide some good splash resistance, but this is as far as it really goes: they won’t keep you dry after a few laps on sodden trails or sustained rainfall. This said, on a mostly dry day with a few puddles here and there, the Flexairs do a great job at keeping you fairly clean and dry, with the DWR finish providing just enough resistance to fight off the occasional mud splat.

The Fox Flexair trousers do really well to deliver a “racey” profile without being super tight and restrictive. The material wraps tightly down on knee pads, but even with chunkier pads, they never felt claustrophobic. The bonded waistband does a good job at keeping the pants secure and comfortable, but also provides a little bit more mud protection for your backside, preventing dirt from sneaking in at the waist.

I’ve also been really impressed with their durability. They’ve not shown signs of wear and tear nearly as much as expected with such thin material. Whether it’s from flat pedal pins or brambles, I’m yet to see signs of holes, rips or tears. The fabric is impressively tough, and despite its breathability and lightness, it really holds up well to punishment.

The Wolf’s Last Word

I’ve been really impressed with the Fox Flexair Jersey, especially the Polartec fabric with its ability to keep you warm or cool depending on what is needed of it. The durability of this Polartec fabric is more than satisfactory, especially for a summer jersey which will get thrashed down overgrown trails. The four-way stretch and slim but versatile fit makes for a stylish piece, albeit slightly see-through. Overall though, the Flexair Jersey is a properly impressive bit of kit that has quickly become my go-to summer jersey.

If you can stomach the price, Fox has done a great job in adapting their race-oriented pants to a set that you can also use on a daily basis. The relatively high cost is matched in the quality of the pants. The durability really surprised me: for such a thin and lightweight pair of trousers, their strength and resistance to scrapes is commendable. The Flexair pants wouldn’t be ideal for a colder winter ride, but for just about anything else they strike a perfect balance. 

Price:
Jersey: £69.99 / $104.95
Pants: £150 / $174.95

Website: Foxracing.com