I ran 45 miles in the On Cloudmonster 3 Hyper LS and it’s my favorite On running shoe ever

When a shoe costs $280 and looks like the On Cloudmonster 3 Hyper LS, with its moon boot laceless upper, you expect big things with regards to its performance.

However, I didn’t enjoy the original On Cloudmonster Hyper (there hasn’t been a 2, the 3 Hyper is so named to line up with the On Cloudmonster 3), so even though the new shoe has a lot of updates, I worried it wouldn’t deliver on the run.

Those worries were laid to rest on my first run in the Cloudmonster 3 Hyper LS, when it felt fantastic, and I’ve enjoyed it for every run I’ve done in it since.

The price is incredibly high and the fit of the innovative LightSpray upper might not work for everyone, but the Cloudmonster 3 Hyper LS is very light and springy, and it’s one of the most versatile super-trainers I’ve tested.

On Cloudmonster 3 Hyper LS review: price and availability

The On Cloudmonster 3 Hyper LS launched in April 2026 and costs $280 in the U.S. and £270 in the U.K., which is a big step up in price on the standard On Cloudmonster 3 Hyper, which is $220/£210.

It’s the most expensive non-racing shoe I’ve ever tested in fact, and even makes pricy super-trainers like the Asics Megablast and Asics Superblast 3 look cheap. It does come with a pair of On’s Elite Run Socks though, to soften the financial blow.

On Cloudmonster 3 Hyper LS: $280 at On.com (US)

The On Cloudmonster 3 Hyper LS is a limited edition running shoe that's light, springy, and great for just about all types of runs. The midsole is delightfully springy and fun, while still feeling stable at slow speeds. Sure, it's price point isn't for everyone, but if that doesn't deter you — the On Cloudmonster 3 Hyper LS is my favorite On sneaker ever.

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On Cloudmonster 3 Hyper LS review: design and fit

The Cloudmonster 3 Hyper LS is currently only available in the white-and-yellow design I tested, and I would stick to your normal running shoe size in the shoe.

You can’t adjust the fit of the LightSpray upper, so it will either work for you or it won’t — I found the fit to be really secure and comfortable on all my runs, but I have a fairly narrow foot and my friend with high arches struggled to get the shoe on and off.

The LightSpray upper is the reason the Cloudmonster 3 Hyper LS is so lightweight though — it tips the scales at just 7.6oz in my US men’s size 9.5, which is almost 2oz lighter than the standard model of the shoe with its conventional upper.

It’s the lightest super-trainer I’ve tested and still has a very high stack of midsole foam, standing 45mm tall at the heel and 39mm at the forefoot for a 6mm drop.

Upper

I’d argue that the midsole is the real star of the show on the Cloudmonster 3 Hyper LS, but it’s the LightSpray upper that certainly catches the eye at first.

The seamless, one-piece upper is applied to the shoe by a robot, a process that’s clearly expensive but does create a very lightweight and comfortable upper.

It’s worth testing the Cloudmonster 3 Hyper LS if you can to see how well the upper fits your foot, and when rounding sharp corners I did notice a bit of lateral movement of my foot, but for the most part I found the fit and feel of the upper excellent.

Midsole

The dual-density midsole on the Cloudmonster 3 Hyper LS has a thick top layer of On’s PEBA-based Helion HF foam, which is ,light, soft and energetic.

Underneath that there is a layer of the brand’s firmer CloudTec pods to provide a stable frame for the bouncy foam above.

With the original Cloudmonster Hyper there was only PEBA foam under the forefoot of the shoe and the large amount of CloudTec dulled the ride of the shoe and made it quite heavy.

The addition of more PEBA Helion HF foam greatly improves the ride of the Cloudmonster 3 Hyper LS in comparison and reduces the overall weight.

Outsole

For such a light shoe I was pleasantly surprised by how much rubber the Cloudmonster 3 Hyper LS has on the outsole.

Most of the individual pods on the shoe are covered with a thick layer of rubber that should boost the durability of the shoe, and it has gripped well for me on all my runs.

On Cloudmonster 3 Hyper LS review: running performance

When testing an expensive super-trainer there are two main things I’m looking out for; versatility and a fun ride.

There are a lot of great running shoes available for under half the price of the Cloudmonster 3 Hyper LS, so it needs to score highly for both performance and enjoyment to make it worth considering.

In my testing, it did just that. The midsole is delightfully springy and fun, while still feeling stable at slow speeds thanks to the CloudTec frame surrounding the softer midsole foam.

There’s also no doubt it’s a versatile shoe. I’ve done two interval sessions on the track in the Cloudmonster 3 Hyper LS, a 10-mile tempo run and plenty of easy miles in it, and it’s felt great for all those runs.

The ride is smooth and it’s such a light shoe you can pick up the pace easily. It doesn’t have as much propulsive punch at your fastest speeds as a plated racing shoe, but the Cloudmonster 3 Hyper LS is a lot more enjoyable than such a shoe when you’re cruising at an easy pace.

If the fit works for you, I think the ride of the Cloudmonster 3 Hyper LS will work for every runner, because of its balance and weight, comfort and spring, but the price will certainly be a factor in deciding whether to go for it.

Should you buy the On Cloudmonster 3 Hyper LS?

The On Cloudmonster 3 Hyper LS is a great running shoe and my favorite On sneaker ever, and it’s a shoe I’ll likely continue to use in my own running shoe rotation when not testing new models.

However, there are extremely good options available for less. The Asics Megablast is my favorite super-trainer overall and while very expensive itself, it’s a lot cheaper than the Cloudmonster 3 Hyper LS.

The Kiprun Kipstorm Tempo is even better value at $170, offering a very versatile ride in a high-stack shoe for daily training, and if you like a lower stack shoe then the Adidas Adizero Evo SL is an enjoyable all-rounder for $150.

These shoes offer better value than the On, but if you are dead set on getting a Cloudmonster 3 Hyper, I think the LightSpray model is worth the upgrade on the standard shoe, which is heavier and firmer, and less springy.