After running plenty of city miles, I’ve found a shoe that nails some things but misses others. The Cloudswift 4 brings solid build quality and stability, especially for heel strikers, but its firm feel and high price might make you wonder if it’s the best value compared to softer, bouncier options out there.
This fourth version keeps the sleek look and nice materials On is known for, but there’s more going on under the hood. They’ve changed up the outsole grip, reworked the internal plate, and tried to fix a few nagging issues—though, honestly, some new quirks have crept in.
As I put these through their paces, I kept an eye on how the updates actually play out on city streets and in the gym. From the knit upper’s airflow to that polarising Helion foam, let’s dig into whether this lifestyle-meets-performance trainer is really worth adding to your closet.
First Impressions and Design
The On Cloudswift 4 definitely makes a statement with its chunky rectangular CloudTec pods and smooth knit upper. First try-on? It feels like style and a locked-in fit come before plushness.
Appearance and Style
Those rectangular sole pods are still the star of the show, running the length of the shoe and giving it a modern vibe that’s hard to mistake for anything else.
The knit upper feels nice and upscale, woven as one piece instead of stitched panels and a separate tongue. It’s got a sock-like look that fits in at the gym or just walking around town.
There are ventilation holes in the toebox—good for airflow, and they break up the look in a way I actually like.
The blue Speedboard plate peeks through the midsole, adding a bit of tech flair, while branding on the heel stays subtle and doesn’t mess with the clean lines.
Initial Fit and Comfort
Slipping these on, you get a snug, even hug all around. The bootie-style upper spreads out pressure, so there aren’t any sharp pinch points.
The toebox is on the narrow side at 68.9 mm (average is more like 73.5 mm), but with 33.5 mm of height, your toes have some headroom to wiggle.
The knit flexes with your foot, so it’s not restrictive, and it adapts if you’re a bit wider or narrower than average.
The heel counter is more squishy than stiff—not everyone’s favorite, but it makes for a comfy step-in. If you really want a locked-in heel, you might want more structure here.
Midsole Construction and Technology
The Cloudswift 4 uses a dual-density Helion superfoam midsole, aiming for a middle ground between cushion and bounce. The CloudTec pods and a nylon Speedboard plate all work together to give this shoe its distinct feel.
Helion Superfoam Explained
On’s Helion superfoam runs the length of the midsole, but it’s not all the same. There’s a softer layer up top for impact and a firmer one underneath for stability.
The softer upper foam helps with landing, and I did notice it’s a bit more forgiving than older versions.
The firmer lower foam keeps things stable so the shoe doesn’t get mushy, and On claims it’s all about “soft landings and powerful take-offs.”
Honestly, the Helion foam still feels pretty firm overall. The dual-density thing works, but don’t expect the bounce or pillowy feel you get from some newer running foams.
Cloud Elements and Impact Absorption
The CloudTec pods are hollow, built right into the midsole. They compress when you land and spring back as you push off.
Each pod moves on its own, which gives a sensation you’ll either love or need time to get used to. They also make On shoes instantly recognizable, for better or worse.
For impact absorption, the pods are… fine. Not as soft as EVA, but they do soak up some shock. The hollow design also keeps weight down compared to solid foam.
They shine on smooth pavement and tarmac, but on rough trails or uneven ground, they can feel a bit wobbly.
Plastic Shank and Stability
There’s a nylon-blend Speedboard sandwiched between the foam layers, running from midfoot to forefoot.
This plate gives the shoe a rocker shape that helps roll you forward, and it keeps the midsole from feeling floppy.
I noticed a bit of snap at toe-off thanks to the shank. It’s not as dramatic as carbon plates, but it does add some pep to your stride.
The cage construction and Speedboard work together for solid midfoot lockdown, helping your foot stay put during runs.
Fit, Upper, and Lacing System
The Cloudswift 4’s knit sock construction wraps the foot snugly. The toe box is narrow but tall, and the lacing does a decent job of keeping the midfoot secure.
Sock-Like Upper Material
On calls the upper an “engineered-mesh sock,” and it really does fit like one. It’s soft, stretchy, and those ventilation holes in the toe box actually keep things cool.
I found it super comfortable on the run. The knit moves with your foot, so there aren’t any hot spots or pinches like you sometimes get with stiffer mesh.
There’s reinforcement where you need it, but it doesn’t feel bulky.
There’s not a ton of padding up top, but honestly, the sock-like fit means you don’t miss it. The heel does have a thick foam insert, which makes sliding your foot in a bit nicer.
Toe Box and Sizing
The toe box is narrow at 68.9 mm, tighter than most running shoes, but the flexible knit helps a bit.
Vertical space is generous, though—33.5 mm high—so your toes can move up and down without feeling cramped.
The width at the widest point is 93.8 mm, so a little narrower than the last version. Folks with wide feet should definitely try them on first.
I’d stick with your usual size. The knit stretches a bit over time, so sizing up may leave you with too much room.
Lacing Structure and Lockdown
The lacing system does its job for the midfoot, but it doesn’t go high enough for max heel lockdown.
The laces link up with a supportive band around the midfoot, which really helps keep your foot steady.
It’s solid for what it is, though if you want that locked-in heel, you might miss the higher lacing found on some other shoes.
The speed laces are easy to tweak, and once you set them, they stay put—even on longer outings.
Performance and Durability in Daily Use
This shoe works best as a versatile daily option for light running. The Helion foam gives you some energy return (57.6%), but it’s definitely more about stability than bounce.
Urban Running and Versatility
The Cloudswift 4 is right at home in the city, handling errands, walks, and casual runs without fuss.
At 10.3 oz, it’s heavier than some running shoes. You’ll notice it on longer runs, but for everyday stuff, it’s not a big deal.
With a 10.4mm drop, it’s tailored for heel strikers. The firm midsole (36.1 HA) feels stable on hard surfaces like concrete and pavement.
The CloudTec system cushions decently for runs up to around 6 miles. For serious training or long distances, though, I’d look elsewhere.
Best for:
- Daily wear and walking
- Light runs (1-6 miles)
- Gym workouts
- Urban environments
Responsiveness and Ride Quality
The ride is firm and stable, not especially lively. Lab tests show 57.6% energy return—just shy of the average.
The Helion foam is pretty firm at 36.1 HA, one of the stiffer midsoles I’ve tried lately.
The CloudTec pods compress a bit each step, but don’t expect a super soft, cloud-like feel.
If you’re a heel striker, you’ll like the 10.4mm drop and the heel’s beveled shape. The rocker helps roll you forward smoothly.
But if you land on your forefoot, there’s not much cushion up front (just 22.3mm stack), and the foam is too firm for comfort.
Long-Term Durability
Durability is still a bit of a sticking point with the Cloudswift line, at least judging from what folks are saying online. The knit upper can start looking a little rough after just a few weeks of regular use.
Heel padding? It doesn’t seem to hold up all that well with daily wear. You’ll probably notice the comfort and that nice step-in feel fade faster than you’d like.
The outsole mixes rubber pods and exposed EVA foam. Sure, the rubber covers the spots that take the most beating, but that exposed foam—yeah, it tends to wear down a lot quicker than if it were all rubber.
- Upper materials show early wear
- Heel padding degrades quickly
- Exposed foam sections wear faster
The improved grip hints that On tried to tackle some of these issues. Still, for the price, I can’t help but wish the Cloudswift held up better for everyday pounding on the pavement.
