Mountaineering boots & Crampons - Equipment Guidance
Mountaineering boots & Crampons - Equipment Guidance
An ISM Guide to Choosing the Right Boots and Crampons for Your Alpine Course
The Learning Starts Here
Choosing the right mountaineering boots and crampons is an important part of preparing for your ISM alpine climbing course.
Your boots need to be waterproof, comfortable and sufficiently supportive for travelling on snow-covered glaciers, climbing snow slopes and moving across varied alpine terrain.
The type of course you're joining, the terrain you'll encounter and your future mountaineering ambitions will all influence which boots and crampons are most suitable.
Our advice is simple: choose your boots first, then choose crampons that fit those boots correctly.
Your boots and crampons work together as a system, and understanding how they fit and function together is an important part of becoming a more confident mountaineer.
Choosing Your Mountaineering Boots
Mountaineering boots are commonly classified as B1, B2 or B3, according to their stiffness and intended use.
For most ISM alpine courses, we recommend either B2 or B3 boots.
B2 Boots – Summer Alpine Mountaineering
For many of our summer alpine climbing courses, a good-quality B2 boot provides the best balance between comfort, weight and technical performance.
B2 boots are generally lighter, more breathable and more comfortable on long alpine approaches than traditional B3 boots, while providing sufficient support for glacier travel, snow slopes and moderate alpine climbing.
Our ISM Guides frequently choose B2 boots during the summer because of their versatility and comfort.
Recommended for ISM courses:
- Summits & Skills
- Classic AlpinISM
- Monte Rosa 4000ers
- Student Alpine Week
ISM Guide examples:
- Scarpa Charmoz Pro GTX
- La Sportiva Trango Alp GTX
Both are excellent examples of summer alpine mountaineering boots, but they have quite different shapes and fits.
Always try boots on before purchasing, ideally with the socks you'll use in the mountains.
The boot that fits your foot best is more important than the brand.
B3 Boots – Technical Alpine Mountaineering
B3 boots have a rigid sole that provides greater support when front-pointing on steep snow and ice.
This becomes particularly important on technical routes where you may spend extended periods standing on the front points of your crampons.
Many insulated B3 boots also provide greater warmth than lighter summer alpine boots, making them particularly suitable for colder conditions, although not all B3 boots offer the same level of insulation.
Recommended for ISM courses and expeditions:
- Technical Alpine Ascents
- Mont Blanc Ascent Week
- Winter Icefall Climbing
- Kyrgyzstan expeditions
ISM Guide examples:
- Arc'teryx Acrux AR
- Scarpa Mont Blanc Pro GTX
- La Sportiva Nepal Evo GTX
The Arc'teryx Acrux AR has the additional advantage of a removable inner boot, which is particularly useful on expeditions where drying your boots overnight can be difficult.
ISM Guide Advice – Think About Your Future Climbing
If you're joining us for Summits & Skills, Classic AlpinISM, Monte Rosa 4000ers or Student Alpine Week, a comfortable B2 boot will generally be the most appropriate choice.
If your ambitions include technical alpine routes, winter icefall climbing or expeditions, it may be worth considering a B3 boot from the outset.
If you already own suitable B3 boots, there's generally no need to buy B2 boots specifically for a summer alpine course.
However, there's no advantage in carrying unnecessary weight or wearing an overly rigid boot if your climbing objectives don't require it.
We also strongly recommend wearing your boots on several walks before arriving on your course to make sure they're comfortable.
Choosing Your Crampons
Crampons need to be compatible with your boots and appropriate for the terrain you'll encounter.
For most summer alpine mountaineering, we recommend steel 12-point crampons with horizontal front points.
These provide excellent versatility for glacier travel, snow slopes and classic alpine climbing.
For more technical climbing, different front-point designs can provide additional precision and security.
Petzl VASAK – General Alpine Mountaineering
The Petzl VASAK is an excellent all-round mountaineering crampon and one we regularly recommend for ISM summer alpine courses.
Its 12-point design and horizontal front points provide secure footing on snow, glaciers and classic alpine terrain.
Recommended for ISM courses:
- Summits & Skills
- Classic AlpinISM
- Monte Rosa 4000ers
- Student Alpine Week
For many clients, the VASAK is an excellent first crampon and will remain useful for years of alpine mountaineering.
Petzl SARKEN – Technical Alpine Mountaineering
For more technical alpine routes, we recommend considering the Petzl SARKEN.
The Sarken has a very fifferent front-point design combining characteristics of horizontal and vertical front points, providing an excellent balance between support on snow and penetration into harder ice.
This makes it particularly versatile on routes involving a mixture of snow, ice and mixed terrain.
Conditions in the European Alps can change considerably throughout a climb, and on expeditions to Kyrgyzstan, the terrain and conditions may be even less predictable.
ISM Guide recommendation: The SARKEN is an excellent choice for technical alpine climbing and our Kyrgyzstan expeditions, where versatility across changing conditions is particularly valuable.
Petzl DART – Technical Icefall Climbing
For technical icefall climbing, the Petzl DART offers a more specialised front-point configuration.
Its technical front points provide precise placements and effective penetration on steep, hard water ice.
This makes it particularly suitable for sustained front-pointing and technical ice climbing.
ISM Guide recommendation: The DART is an excellent choice for our Winter Icefall Climbing courses.
Petzl ALPEN ADAPT – A Crampon System That Develops With You
One of the advantages of the Petzl crampon range is its modular ALPEN ADAPT system.
Rather than purchasing an entirely new pair of crampons as your climbing develops, compatible components can be changed to suit different objectives.
For example, you might begin with VASAK crampons for summer alpine mountaineering and later progress towards SARKEN or DART front sections for more technical climbing.
Depending on the approved configuration, you may be able to retain compatible rear sections, connecting bars and attachment components.
This can be a practical and economical way of developing your mountaineering equipment over time.
ISM Guide Advice: Buy equipment that's right for your climbing now, but where possible choose a system that can develop with you.
Always check Petzl's current compatibility guidance before combining or changing components.
Boot & Crampon Compatibility
Boots and crampons must fit together correctly.
A typical B2 mountaineering boot has a heel welt designed to accept a compatible crampon heel lever.
Because most B2 boots don't have a front toe welt, they normally use a flexible or universal toe binding together with the heel lever.
Compatible B3 boots may also accept a wire toe bail and heel lever attachment system, commonly used for technical climbing.
In the UK, crampons are often described as C1, C2 or C3:
- C1: General-purpose crampons, normally with flexible bindings at the front and rear, for compatible walking and mountaineering boots.
- C2: Mountaineering crampons, commonly using a flexible front binding and heel lever, particularly suited to compatible B2 and B3 boots.
- C3: Technical crampons, commonly using a wire toe bail and heel lever, designed for compatible rigid B3 boots.
These categories are useful guides, but they don't guarantee compatibility.
Always take your boots to the climbing shop when purchasing crampons and have the fit checked.
The crampons should sit securely beneath your boots, with the bindings correctly adjusted and the retaining straps properly fastened.
Anti-Balling Plates – Essential
Anti-balling plates are an essential feature of modern alpine crampons.
In certain snow conditions, particularly damp or sticky snow, snow can accumulate beneath the crampon, preventing the points from gripping effectively.
This can become dangerous on steep or exposed slopes.
Make sure your crampons have effective anti-balling plates fitted and that they're in good condition.
Practise Before Your Course
Before travelling to the Alps, spend a little time practising putting your crampons on and taking them off.
Learn how the heel lever, toe binding and retaining strap work together.
Being able to fit your crampons efficiently, particularly while wearing gloves or standing on uneven ground, is a valuable practical skill.
Your ISM Mountain Guide will help you develop these skills during your course.
ISM Guide Advice – Buy Once, Buy Well
There's no need to purchase the most technical or expensive boots and crampons available.
For many clients, a comfortable B2 boot combined with Petzl VASAK crampons will provide an excellent starting point for their alpine mountaineering.
As your climbing develops, warmer B3 boots and more technical crampon configurations may become appropriate.
Choosing adaptable equipment, such as Petzl's ALPEN ADAPT system, can also help reduce unnecessary purchases.
The most important thing is understanding what your equipment is designed to do, making sure it fits correctly and choosing equipment that's appropriate for your climbing objectives.
If you're unsure whether your existing boots or crampons are suitable, please contact ISM before making a purchase.
We're always happy to help you make informed equipment choices.
At ISM, the learning starts here.
Further Reading
For a more detailed explanation of crampon design, fitting, front-point configurations and mountaineering technique, read our educational article:
Vital Information - Choosing Crampons for Alpine Mountaineering
This article explores the Petzl VASAK, crampon compatibility and the ALPEN ADAPT system in greater detail, helping you understand not just which crampons to choose, but why.
ISM support independent outdoor retailers:
Both shops stock a wide range of equipment and offer a discount (in store and online) when you book a course with ISM. A discount code will be sent when your booking is confirmed.
