Review: Keen NXIS Evo Hiking Boot
Our Verdict
An extremely lightweight hiking boot. So much so that you could actually run in it. Best worn on mild terrain, it’s soft underfoot but provides good ankle support. Fully waterproof, it’s great in the wet, but with a wide foot box, the NXIS EVO is best suited to wanderers wider in the toe.
| RRP | £139.99 |
| KEEN.DRY | Proprietary waterproof, breathable membrane |
| Features | Compression-molded EVA removable midsole, for long-lasting comfort |
Pros
- Super lightweight
- Cushioned sole with a lot of bounce
- Waterproof and warm
- Wide forefoot (if that suits your feet)
Cons
- Soft sole if its not what you’re after
- Wide forefoot (if that doesn’t suit your feet)
What I’m Looking For
For the last few years, I’ve always gone with La Sportiva or Scarpa trail or approach shoes when in the mountains. I only use boots (with a stiff sole) when at some point in the day I may need to fit crampons, otherwise, it’s shoes every time. Most of my weekends are spent sport climbing at the moment, and so I wear something light that can go into my backpack once at the base of a route after the approach.
Like anyone, I’m looking for a quality sole and a good fit. Of course, we all have different shaped feet and I would say that mine fall into the standard to narrow category. I like bright colours too.
Firts Impressions
Pulling these boots out of the box, I expected them to be much heavier than they were. They’re super light (417.9g according to the KEEN website). I’d prefer a brighter colour choice than the olive-green pair I’ve tested, however I have discovered that there are a couple of louder options available when looking at the options online.
Around the ankle and eventually looping into the top of the laces, they’re manufactured with a thin cord system, to draw the boot in all round when pulling on the laces. I’m a little dubious of such ideas, because if that cord breaks, then the shoes, unless reparable, are rendered virtually useless. That said, I’ve no idea of its strength, so it’s probably unfair of me to cast any doubt at this stage. KEEN call this their KonnectFit heel-capture system – designed for a locked-in feel.
They’re cut quite low for a boot, so almost a semi/demi-boot. I like that style as it offers support but also allows movement, reducing bulk. It’s the best of both for those after a bit of ankle support.
The Test
I thought I’d ease myself into this test, opting for a pretty gentle dog walk at first. Nothing too heavy, just a stride around the local woods on reasonably flat ground in the Plain of Vic, Catalunya.
The soles from the off had a pleasing bounce too them and although a little wide in the toe area for me wearing thinnish socks, they felt like they fitted well on the heel and ankle. Again, as per my first impression during their unboxing, they were noticeably light on the foot. And so, because of this plus point, I thought I’d then test them as a piece of approach footwear in Mallos de Riglos, Northern Spain, later carrying them in my backpack once in my rock shoes.
The trails leading to all of the climbing routes in Riglos are narrow, loose and steep, profanity inducing scree paths that wiggle through shoulder high bushes. Here, in the main, the going under foot is slippery regardless of what you have on your feet, especially when descending. Although the soles of these boots are nice and bouncy on smoother ground, on scree and rough, lumpy loose paths I felt the press of every stone that I trod on. For this kind of terrain, or all terrain as KEEN note in their features description, the soles seemed a little too flexible for my taste. The soles did however do a splendid job on the rock while we dealt with several rappels off a route in Riglos.
Although the soles of these boots are nice and bouncy on smoother ground, on scree and rough, lumpy loose paths I felt the press of every stone that I trod on
To explore their insulation, we spent a wintery night up on the hill with the telescope in northern Catalunya. My feet remained comfortably warm all evening in these boots and so there is definitely a star awarded for that quality. They’ve been used a fair amount now around the sub-Pyrenees by our house and my partner’s brother has stomped about in them during a weekend of snow here. He absolutely loves them where as I would say that I like them, but for me, my preference is still to wear trail shoes over hiking boots.
Finally, are they waterproof? Does Keen’s own waterproof, breathable membrane work? Well yes, it seems to. Certainly, in wet snow in any event.
Who Are These Boots For?
The NXIS EVO boot is definitely better suited to those wider in the forefoot area or enjoy a bit more wiggle room up front. With such flexible, soft soles, it’s also going to suit those who prefer a fair bit of give in the sole but still looking for good ankle support.
If you’re prone to cold feet, then for you these boots would be a welcome purchase. They’ll suit those wetter days on the hill where you’re likely to face a bit of rain and mud.
What Stands Out
Weight
These boots are really light. Certainly not a clumpy boot and despite their lightweight, they’re still great for colder days.
Soles
Although bendy, the soles do have decent depth in their tread, namely KEEN’s 4mm multi-directional lugs for traction.
Laces
Good sturdy laces too, which I have found to be something of an oversight with other brands – they stay tied and won’t be snapping in any hurry.
Toe Protection
Generous outer toe protection, which make them great for the kind of scrambly approaches we have here and also the rappels.
Value For Money
Despite my squidgy sole gripe, I do think they sit well in their price range. They appear well made and their tech spec/features list is a long one.
BASE Bottom Line
Perhaps not a boot designed for big brutal mountain days, or extremely rough and demanding terrain, but they certainly have a fair place on the hill and countryside owing to their lightweight design, grip warmth and water resistance.
The bounce in their soles and featherlight design would work well for long Pennine Way style peaty paths and accessible trails and will be a great option for many. For me, I think I’d still lean towards a smaller approach shoe for this category of boot, but for plenty of people that added ankle support is a must. If that’s you, this boot could be the perfect option.
Don’t miss a single adventure
Sign up to our free newsletter and get a weekly BASE hit to your inbox
Other posts by this author
Review • Will Appleyard • Jun 13, 2024
Review: Men’s KEEN Versacore Shoe
A comfy shoe to keep you dry on longer days on the mountain.
Review • Will Appleyard • Jul 31, 2023
Review: Montane Azote 25 Backpack
A lightweight, versatile day pack with perfectly placed pockets and a form-fitting design
Review • Will Appleyard • Jul 21, 2023
Review: Adidas 5.10 NIAD climbing shoes
A snug fitting laced all around climbing shoe
You might also like
Review • Matthew Pink • Mar 14, 2025
Review: Salomon DRX Defy GRVL running shoe
The Salomon DRX Defy GRVL blurs the line between road and trail, it’s designed to handle the wild without making you feel like you've strapped bricks to your feet.
Review • Matthew Pink • Mar 14, 2025
Review: Gozney Tread portable pizza oven
A gas-fired pizza oven for fine food on the road or in the wild.
Review • Sam Firth • Jan 28, 2025
Review: Arc’teryx Beta SL Jacket
A jacket that is lightweight AND waterproof!
