This has become my go to boot for ice climbing and guiding on glaciers. It’s by far the most comfortable mountain boot I’ve owned. These keep my feet warm and comfortable all day no matter if I’m climbing all day or standing and teaching all day. My feet have always stayed dry despite occasionally walking through deep glacier slush and running water. They’re also incredibly light. Love this boot!

This has become my go to boot for ice climbing and guiding on glaciers. It’s by far the most comfortable mountain boot I’ve owned. These keep my feet warm and comfortable all day no matter if I’m climbing all day or standing and teaching all day. My feet have always stayed dry despite walking through deep glacier slush and running water. They’re also incredibly light and climb like a dream.

Love this boot!

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.

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.

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!

Got them , love them. They are very comfortable
I get extra discount from here: coupon-code.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.

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.

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.

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.

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

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.

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.

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.