Book an appointment at the Hereford Service Centre:
La Sportiva

La Sportiva Mens G2 SM Mountaineering Boot

La Sportiva Mens G2 SM Mountaineering Boot

£585.00 £650.00
10% off

Customer Rewards points earned with this item.

The G2 SM has been developed with Alpinists to provide you with the most technically advanced mountaineering boot possible. The G2 is insulated, water resistant and ideal for sub-zero temperatures in mountain environments. 


Season : 2020W R

Code : SP11QBY-

Weight : 0KG

Hover over an icon to view more ...

The G2 is one of the most technically advanced mountaineering boots available, combining heat reflecting insulation, a tough Cordura fabric and a BOA lacing system for guaranteed comfort and support.

Developed in collaboration with Italian alpinist Simone Moro, the G2 (Gashebrum 2) is comprised of three layers, much like an insulated glove. The inner layer next to your foot is an insulating 'bootie' which features a 6mm thick layer of PE and EVA foam to insulate you from freezing temperatures. This is reinforced with two layers of velcro and a thick Carbon insulated footbed to avoid heat loss through the bottom of the boot. Moving to the inner shell (the mid section of the boot), a technical 4-layer structure further increases warmth. This inner boot uses a synthetic leather (Lorica) to reinforce areas which are prone to wear. Lorica never dries out and is far easier to take care of compared with natural leather thanks to it's combination of thin microfibres throughout the fabric. Finally, the outer of the boot is much like the shell outer of your glove; it provides water resistance and protection against abrasion and snow. The outer is made entirely from Cordura, a super tough Nylon which dries quickly and is exceptionally abrasion resistant for it's weight. 

Lacing a boot has never been more satisfying. La Sportiva's G2 uses BOA lacing systems rather than traditional laces. BOA systems rid the boot of standard laces and replaces it with a wheel which pulls in a series of laces which lace right to the toe of the boot. Not only is this easier and far quicker, but also allows you to re-tighten the boots while wearing thick gloves. BOA laces are quicker, more precise and far easier with thick hand wear.

Keeping you planted is Vibram's Matterhorn sole with Impact Brake System lugs. A series of differently sized lugs dig into the ground while descending to give you confidence in almost all conditions. 

For mountaineering around 6000/7000 metres, the G2 comes second to none. Warm, tough as nails and ready to be abused at altitude. 

  • Insulated bootie and inner shell
  • Highly water resistant outer shell
  • Cordura gaiter
  • Lorica reinforcements
  • Vibram Matterhorn sole with braking system
  • Insulated footbed
  • BOA lacing system
  • Ideal around 6000/7000m
Care & Advice

Here at Trekitt we know all too well of the difficulties people face when purchasing footwear online. The hardest part is being confident that you have picked the correct fitting footwear, so that is what we will cover in this blog (or if you prefer you can CLICK HERE to watch our video).

In our Hereford shop we offer a professional boot fitting service where we assess your feet, find a selection of boots that match you foot shape and most importantly we make sure that they are comfortable. This is easy to do in the shop, where we have access to the right tools, the option of letting you try on as many styles as you like and a knowledgeable member of staff that can communicate directly with you regarding your needs.

But let’s not dwell on what you don’t have, instead we shall teach you how to ascertain your size using some common household objects.

What you will need:

  1. A piece of A4 paper
  2. A pen or pencil
  3. A floor and a flat wall
  4. A ruler or tape measure

What you need to do:

  1. Put on the socks that you intend to use with the footwear you have selected
  2. Place the paper/cardboard on the floor with one end flush against a wall
  3. Stand on the A4 paper with your heel pressed firmly against the wall and your foot pointed forward with the edge of your big toe aligned with the edge of the paper.
  4. Draw a line just in front of your big toe
  5. Measure the distance from the wall edge of the paper to the line you drew
  6. Repeat the process for the other foot
  7. Finally, check the longer of the two measurements against the table below to find your size
Your measurement (cm) UK Size EU Size
21.7 3 35
22.1 3.5 36
22.5 4 37
22.9 4.5 37.5
23.3 5 38
23.7 5.5 39
24.1 6 39.5
24.5 6.5 40
24.9 7 41
25.4 7.5 41.5
25.8 8 42
26.2 8.5 42.5
26.6 9 43
27 9.5 44
27.4 10 44.5
27.8 10.5 45
28.3 11 46
28.8 11.5 46.5
29.2 12 47
29.6 12.5 47.5
30 13 48
30.4 13.5 49

NOTE: The above table is only a guide. Manufactures don’t like to make it easy as every single one of them strays from the measurements above.

So, once you have received your chosen footwear please take the time to do these simple tests to check they are actually the right size and that they fit the rest of your foot correctly.

The length test

  1. Whip out the removable footbed from the boots.
  2. Put them on the floor about shoulder-width apart.
  3. With your socks on, stand on the footbeds making sure that your heels are right to the back of the heel cup.
  4. You should now be able to see approximately 2 cm (about an index fingers width) of the footbed poking out in front of your toes.

If you can see this amount of space then you are pretty much on the way to making sure that your boots are the correct size. This space between your toes and the end of the footbed ensures that you will not stub your toes on the inside of the boot when you descend. This can be excruciatingly painful. If you can’t see this amount of space then it’s a good bet that the boots will be too small.

The heel lift test

This test will tell you if the shape of the internal heel cup matches your heel to ensure it holds you securely, especially when ascending steep ground. We are trying to eliminate the dreaded heel blister.

Before you commence this test it is imperative that you have laced the boots correctly.

  1. Tap your heel so it’s as far back in the boot as possible, being sure to keep your foot at a right angle to your leg at all times during the next few steps.
  2. Make sure that the laces have no slack in them across the forefoot by starting at the front of the boot and working the slack backwards and to the top. You should just be able to squeeze the end section of your finger under the laces, not easily, but just about.
  3. If you are wearing shoes then ensure the last upper part of the lacing is tight, not cutting off your circulation tight, but certainly comfortably snug as this will hold your heel back in the heel cup and will reduce any excess slipping (If you are wearing boots, this will be the eyelets that sit just below/inline the ankle).
  4. Please also make sure when trying out boots that use all the lace hooks, don’t be tempted to leave the top one undone as your foot needs to be held securely right in the back of the boot.
  5. Now that your boots are done up properly stand up on your tiptoes and walk on the spot on the balls of your feet as if you are walking up a steep hill. If your heels lift more than approximately 5mm from the footbed you may need to pull the laces tighter, or the boots may just be the wrong shape for you.

The toe wiggle test

This test is designed to check whether you have enough room around your toes. Your toes need to be in a happy place, they need plenty of room to wiggle without being squashed together, or cramped in from above. However they don’t want to be swimming around in acres of space either, this will cause friction blisters and stability problems when traversing hillsides. So, with the boots done up properly, walk around your house and make sure that your toes can wiggle freely.

Home Trial Period

However, even after the most rigorous assessment and testing, there is no better way to be absolutely sure than to have the boots on your feet for an extended period of time. We therefore offer our Home Trial Period which gives you the opportunity to wear the boots around your house to give you an indication of how they feel before you venture outside. We recommend that during the Home Trial Period that you wear the boots for as long as possible and at different times of the day, wear them up and down stairs, when moving around and when resting, you can even sleep in them if you want. 

IMPORTANT NOTICE: During the Home Trial Period we insist that the boots are worn indoors only. All footwear must be returned in a new and perfect condition with the original packaging and a proof of purchase. We retain the right to refuse to refund or exchange if footwear shows any sign of being worn outside.

For full details on footwear aftercare please check out our related blog here.

Technical Information

Protective external shell in water repellent, abrasion resistant, stretch Cordura® + a protective stretch layer to cover the lining

Inner Shell:
Insulating 4 layer structure with Lorica reinforcement inserts

PE + EVA single density 6 mm with Flex Zone and double Velcro closure

Insulated carbon Honeycomb Tech 3mm 

Insulating 3mm carbon Honeycomb Tech

2mm Polyurethane with differentiated heights at toe and heel for crampon attachment

Vibram Matterhorn with Impact Brake System lugs

Weight: 1940g per pair

Sizing Information
EU Sizing UK Sizing 
41 7.5
42 8
43 9
44 9.5
45 10.5
46 11.5
47 12


Write a review

Review This Item

As rated by 0 Customers

What do you think of La Sportiva Mens G2 SM Mountaineering Boot?

  • Your Forename
  • Your Email
  • How would you rate it?
  • Would You Recomend this product?
  • Yes: No:
  • Let others know your opinion.
  • Submit Review
Coming Soon

This product will be available very soon. Want to be the first to know when it arrives? Simply enter your email address below and we will notify you as soon as the stock is on the system


Thanks for choosing this item ...

La Sportiva Mens G2 SM Mountaineering Boot

Would you like to see the special offer we have for you?



Excellent customer service. Really detailed easy to understand product descriptions on the Trekitt website, and gear reviews on the Trekitt YouTube channel made it so easy to choose the right backpack for me.
Emily - May 2020
Amazing service! Very helpful in regards sizing and what most matched my needs, despite this being done over the internet. YouTube videos of products being examined are very useful also. Would definitely use again, very fast and efficient delivery. Brilliant! Highly recommended!
David R - April 2020
Highly recommend. I usually go to the shop in Hereford as staff are alwasy very helpful and knowledgeable. So this was the first time I have purchased online and the service was just as good as the shop.
Grizzy - April 2020


Read More Reviews

Need some help?
To improve your shopping experience today and in the future, this site uses cookies.
I Understand