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La Sportiva G5 Mountaineering Boot

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sale $562.35 $750.00

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G5 Mountaineering Boot

Those were the words your buddy told you before you set your sights for an epic first ascent, and you can rely on the La Sportiva Men's G5 Mountaineering Boot when you're ascending unknown terrain. This highly technical big mountain boot boasts a stretchy Cordura gaiter equipped with a waterproof membrane and a heat-sealed zipper to keep wetness at bay. The durable upper features flex zones to keep you trekking and climbing anatomically, while the insulated felt works with the insulated footbed to maintain warmth. Vibram's Matterhorn rubber sole includes large lugs and step-in crampon compatibility.
  • Technical big mountain boot designed for visionary ascents
  • Stretchy Cordura gaiter with waterproof membrane and rubber rand
  • High-tenacity upper with flex zones and insulated felt
  • Insulated carbon footbed with air cushioned midsole underneath
  • Vibram Matterhorn with large rubber lugs and Impact Brake System
  • Item #LSP00CV

Upper Material
[gaiter] Cordura, rubber [upper] high-tenacity nylon, PE barrier
Waterproofing
[gaiter] membrane
Insulation
[upper] felt
Closure
[gaiter] heat-sealed zipper [upper] Boa
Last
board
Footbed
honeycomb tech insulated carbon (3mm)
Midsole
TPU, PU, SBR Aircushion (8-9mm)
Sole
Vibram Matterhorn, Impact Brake System
Style
super-gaiter boot
Crampon Compatibility
step-in
Claimed Weight
1lb 14oz
Recommended Use
mountaineering
Manufacturer Warranty
1 year

Tech Specs

What do you think about this product?

View

>Rating: 5

Vertical monster

Familiarity:
I've put it through the wringer
Fit:
True to size

I'm reviewing this boots after buying my second pair of them (nothing wrong with the last pair, but I like them a lot and would like to have an extra one) I'm not going to extend on the climbing performance of this boot, It's simply the best performing boot in the market when it comes to the vertical world, it climbs ice superbly and even the rock performance is amazing due to it's low weight and great fit that makes it very precise; alpine ridges also feel super comfortable, they walk great, even for a super technical boot. I'm in love with the BOA lacing system, we all know that feeling of pain when trying to lace up boots with frozen hands, forget about that with this boot, and the boa provides a very quick and precise fit (also very durable, I know some people are skeptical about it's durability, but it's pretty much bombproof, and the newer 2019 model has a reinforcement in the boa area, adding for further protection, you can see in the picture I uploaded). Warmth wise I've used this boot down to -20°C without problem, pair them with a nice pair of socks and you'll have boots for everything but the coldest mountains in the world (say denali, aconcagua, himalayas, etc) When it comes to the sizing, I'm a very standard 7.5 US Men, I've ordered this boots in 40EU and they fit perfectly, I've used them with my warmest socks (smart wool mountaineer) and they feel snug but not cramped, perfect technical fit. They also feel super good with a bit more classic, less volume, mountaineering socks. Bottom line for the fit, they feel true to size, as long as you're not one of those who likes their mountaineering boots with tons of space. In that case you might wanna look for other kinds of boots, because ultra technical boots like this must have a good precise fit. I haven't had any issues with the leaking some people mentioned but I haven't walked through deep puddles with them yet. Bottom line: If you want an ultra technical boot for ice climbing and general mountaineering that's super light, climbs like there's no tomorrow and that's also comfortable and techy, this is are the boots for you. If you can't climb in these, you can't climb.

I'm
>Rating: 5

Vertical monster

Familiarity:
I've put it through the wringer
Fit:
True to size

I'm reviewing this boots after buying my second pair of them (nothing wrong with the last pair, but I like them a lot and would like to have an extra one) I'm not going to extend on the climbing performance of this boot, It's simply the best performing boot in the market when it comes to the vertical world, it climbs ice superbly and even the rock performance is amazing due to it's low weight and great fit that makes it very precise; alpine ridges also feel super comfortable, they walk great, even for a super technical boot. I'm in love with the BOA lacing system, we all know that feeling of pain when trying to lace up boots with frozen hands, forget about that with this boot, and the boa provides a very quick and precise fit (also very durable, I know some people are skeptical about it's durability, but it's pretty much bombproof, and the newer 2019 model has a reinforcement in the boa area, adding for further protection, you can see in the picture I uploaded). Warmth wise I've used this boot down to -20°C without problem, pair them with a nice pair of socks and you'll have boots for everything but the coldest mountains in the world (say denali, aconcagua, himalayas, etc) When it comes to the sizing, I'm a very standard 7.5 US Men, I've ordered this boots in 40EU and they fit perfectly, I've used them with my warmest socks (smart wool mountaineer) and they feel snug but not cramped, perfect technical fit. They also feel super good with a bit more classic, less volume, mountaineering socks. Bottom line for the fit, they feel true to size, as long as you're not one of those who likes their mountaineering boots with tons of space. In that case you might wanna look for other kinds of boots, because ultra technical boots like this must have a good precise fit. I haven't had any issues with the leaking some people mentioned but I haven't walked through deep puddles with them yet. Bottom line: If you want an ultra technical boot for ice climbing and general mountaineering that's super light, climbs like there's no tomorrow and that's also comfortable and techy, this is are the boots for you. If you can't climb in these, you can't climb.

I'm
>Rating: 1

Trashy gaiters

Familiarity:
I've used it several times
Fit:
True to size

After 10 days of ice/mixed climbing I have holes in both gaiters, in the place of boa closure ring. In addition, this part of boot was always covered by pants during climbing. It is very frustrating. Consider other options before you spend $750.

After
>Rating: 4

Light, Durable, Warm but Not Waterproof

Familiarity:
I've put it through the wringer
Fit:
True to size
Height
5` 9"
Weight
155 lbs

I have used these extensively to climb ice here in Alaska over the last 3 months. Firstly, they cinch down in all the right places while still allowing enough flexibility to stem your foot into awkward positions while climbing in technical terrain. The fit is spot on with the rest of my Sportiva footwear (I wear 43.5 in the Akryo, Boulder X, G2, & G5). So far they've shown virtually no signs of wear on the sole, cuff, etc. After changing to these from my 2nd gen Baturas, I shaved over a pound per pair! They're insanely lightweight while staying durable and super warm (I've used them comfortably down to -5F. My only complaint, like many others, is the lack of waterproofness of the zipper. On one approach, I broke through the ice in a creek and my foot got instantly soaked. The water never came up over the super-gaiter, it came through the zipper without the slightest bit of resistance. Creek approaches are very common here in AK and it's not uncommon to break through every now and then. I don't understand why La Sportiva switched from a waterproof zipper (2nd gen Batura) to a non-waterproof one on the G5. It'd be flawless if not for this design. All in all, still a great boot!

I
>Rating: 5

Sizing info

Awesome boots. I saw a deal I couldn't pass up and have these as my first pair of ice climbing boots (poser I know). But ive been out a handful of times and glad I spent the extra $$$. It was super hard to size them because I couldn't try them on locally. Here is some reference on how I sized them. I own the following La Sportiva shoes and sizes: TC Pros: 43.5 Miura VS (velcro) 43.5 Miura (Lace): 44 Helios 2.0 (running shoes) 45 As you can see, I own many pairs of LS shoes in different sizes, obviously looking for a different fit between their applications with some. Ultimately I bought these G5's in 44.5 and they fit PERFECT. I am generally a US 10.5 and 28.5 mondo ski boot. So it looks if you have your Mondo sizing and use LS sizing chart above, you should be GTG. Hope this helps, Happy climbing.

>Rating: 5

Perfect Alpine and Ice Climbing Boot

Familiarity:
I've put it through the wringer
Fit:
True to size
Height
6` 1"
Weight
170 lbs

I think the Sportiva G5 is the perfect boot for the types of climbing I do: frozen waterfalls in CO and Montana and extended trips to Peru and Bolivia. Long approaches are a breeze, they climb flawlessly, crampons go on easily and stay put, and they are really light and warm. Get them- you won’t be disappointed! In my opinion, the bad reviews for not being completely waterproof are overstated. I don’t know if you can walk through rivers or whatever, but I’ve used these in countless wet situations from dripping wet frozen waterfalls, walking through deep slush, slipping while trying to cross a stream, to punching through a not quite frozen lake up to my shin without issue. To each their own. Peace.

>Rating: 5

Warm and Cozy

Familiarity:
I've used it several times
Fit:
True to size
Height
5` 7"
Weight
140 lbs

Mostly used this for roadside and alpine ice in Ouray and the Cascades, where it has performed very well. It seems like the most negative reviews are about not being waterproof, which is fair. I simply haven't needed to wade across many streams.

>Rating:

Born Ready for Winter

Check out La Sportiva's look into the G5 mountaineering boot.

>Rating: 5

Boa system is amazing but...

Familiarity:
I've used it several times
Fit:
True to size
Size Bought
46
Height
5` 11"
Weight
166 lbs

The heel lock down for climbing and release for belaying is amazing. Huge upgrade over batura 2.0 in that regard. But like others say, if you are not dealing with frozen terrain, they leak. But I'm a roadside cragger in cold temps so they are the best ice boots I've used. Anything involving slush, stream crossing they are a no-go.

Is it really true that this boot isn't waterproof? The company claims it's waterproof. Any more details on this? I do a lot of spring climbing in Colorado, where conditions are quite slushy. Thanks in advance.

@hamid here are some more details linked in response to your question on waterproofing: 1. https://rockrun.world/blogs/product-reviews/la-sportiva-g5-mountaineering-boot-review 2. https://runrepeat.com/la-sportiva-g5

>Rating: 1

Not waterproof

I was surprised to see that those boots are NOT waterproof, water comes in through zippers.

>Rating: 5

The best!

Familiarity:
I've used it several times
Fit:
True to size
Size Bought
44
Height
5` 7"
Weight
140 lbs

I LOVE these boots. Upgraded from the Nepal Evo GTX and they are so much better imo. Very comfortable, light, warm and the climbing performance is awesome. The Boa lacing system is pretty slick too.

I

Nice! Did you size it the same as your Nepal Evo?

>Rating: 2

Not waterproof??

Familiarity:
I returned this product before using it
Fit:
True to size

So I saw some reviews on the La Sportiva website stating that this boot is not waterproof. I got them myself to take a look, and these boots are really sweet. BUT THEY ARE NOT WATERPROOF. There is a direct path for water to enter the inside of the boot. The zipper is not waterproof, and the inner boot has no gusset or tongue (it's an open half-boot style). Thus, if you step in a puddle, saturated slush, river, or anything else, there is an clear path from cold water to your foot. I was pretty shocked by this, so I talked to the La Sportiva folks. After reviewing my comments, they are now updating the description of this boot to not waterproof but instead "highly water resistant." To be sure, if all I did was roll up to roadside crags and climb in super cold temps, these things would be a dream. But the risk of water logged feet for any alpinism seems a very high cost. How often do you cross a river, get slogged in a bog, or find yourself working through slush? I am disappointed.

>Rating: 5

Do everything, stay warm, be agile.

Familiarity:
I've used it several times
Fit:
True to size
Height
5` 10"
Weight
165 lbs

These are the last pair of mountaineering boots i will ever wear (well, until they make a new version of this) - super light, agile, extremely warm, and great for every application from ice climbing to casual ridge walking. They are essentially the same weight as the Phantom Tech but seem to climb a bit more natural, and fit my feet a bit better. An easy decision for any mountaineering, especially if you think you'll be climbing in colder temps.

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>Rating:

I have these and they are amazing boots. I’ve never had an issue with their waterproofing but I’m a little concerned about doing some climbing in the cascades in late summer where I’ll likely run into some stream crossings. Would a waterproofing treatment (e.g. Nikwax) help boost the waterproof-ness of these?