Last tested
2024
Status:ongoing
2025

ST 35 Switch

Safety and comfort in one package. With an advanced airbag system, it's ideal for all your mountain adventures, available with interchangeable cover.
  • In words
  • Technical specifications

In words

Intro
A compact, elegant backpack that's light, comfortable, robust and super roomy. It's full of features to please the most demanding skiers and boarders, like a double ice-axe holder, and diagonal and A-frame ski/snowboard carrier. The versatile modular system lets you keep the base unit and change the cover, increasing or decreasing the volume, or even use it without an airbag. The only thing that is not so easy to use is the safety equipment pocket on the side, which takes a little practice to open quickly in order to grab or store your gear. The two canister airbags are separate for improved safety, and the trigger handle can be positioned either on the left or right shoulder. Not bad at all, with a few tweaks it could be excellent.
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Technical specifications

Weight description
canister not included
Inflation type
canister
Inflation system
Arva Reactor 2.0
Inflation time
2 sec. 3
Weight
1880 g
Airbag volume
volume della cover, sistema base a parte L
Balloon volume
150 L
Available capacities
25/26/30/32/35/40
Available sizes
one size
Price
699 €
Top stories
Tutorial
Emergency Repairs on Ski Bases

The Skialper tutorials

Tutorial
Maintenance and complete check-up of ski mountaineering bindings

The Skialper tutorials

2025
Thoughts
At the heart of every ski

Editorial

2025
Intro
Test center

Where the snow is always present

2025
Intro
Skimo skins

It's not all about grip

2025
Instruction
Boot lab: Boots under the microscope

The laboratory analysis of flex, walkability, and thermal insulation of ski mountaineering boots

2025
Intro
Skimo poles
2025
Intro
Safety, a culture of doubt

Beyond the basic definition, there’s nothing as variable as snow conditions and the human psyche when under emotional stress. That's why, after purchasing the right self-rescue kit and airbag backpack, it’s paramount you do your research, train, scrutinize your decisions and, if necessary, opt for plan B. And, at least for now, don’t rely on artificial intelligence. 

2025
Race
Light
Tour
Free
Awards
Best bindings 2025

Skiaklper's Awards

2025
Intro
Products for mountaineers

Once you’ve chosen your skis, boots and bindings, your thoughts then turn to harnesses, crampons, ice axe and helmet, though perhaps not everyone, and not straight away. While it’s true that when starting out, especially for those transitioning from resort skiing who just want to start surfing some pow, the important thing is to get self-rescue equipment. It’s equally true, however, that the sport we love is a combination of two words: skiing and mountaineering.

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