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.
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in

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
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.

2025
Split All Mountain
Intro
Boards, boots, and bindings for splitboarding

Materials are evolving, which is increasing the opportunities for pushing the boundaries of mountaineering splitboarding. It’s no longer just about easy tours, a few jumps and a beer. Thanks to innovative new setups and growing knowledge within the community, long ascents and steep terrain no longer intimidate.

2025
Intro
Skimo bindings

They’re probably the element of your setup that’s evolved the most and seen the most crossover between disciplines. Which is why in general lighter bindings have adapted to make allowances for the trend for opting for wider skis, with hybrid drilling patterns and a greater selection of ski brakes. But the aspect that requires most scrutiny is the height difference between the front and rear pins.

Similar products
2025
Airbag Backpacks
Ferrino
Full Safe 30+5
Type: electric
Weight: 3.200 g
2025
Airbag Backpacks
Pieps
Jetforce BT 35
Type: electric
Weight: 3.040 g
2025
Airbag Backpacks
Scott
Patrol E2 30
Type: electric
Weight: 2.720 g
2025
Airbag Backpacks
Scott
Patrol UL E2 25
Type: electric
Weight: 1.920 g
2025
Airbag Backpacks
Ortovox
Avabag Litric Zero 27
Type: electric
Weight: 1.970 g
2025
Airbag Backpacks
Mammut
Tour 30 Removable Airbag 3.0
Type: canister
Weight: 2.465 g
2025
Airbag Backpacks
Wedze
Freeride 30
Type: canister
Weight: 2.200 g
2025
Airbag Backpacks
BCA
Float E2-25
Type: electric
Weight: 2.660 g
2025
Airbag Backpacks
Arva
Airbag Tour 28 UL Reactor
Type: canister
Weight: 1.600 g
2025
Airbag Backpacks
ABS
Voltage E2 30
Type: electric
Weight: 2.600 g
2024
Airbag Backpacks
Ferrino
Full Safe 30+5
Type: electric
Weight: 3.200 g
2024
Airbag Backpacks
BCA
Float E2-35
Type: electric
Weight: 2.792 g
2024
Airbag Backpacks
Arva
Tour 32 Switch
Type: canister
Weight: 1.780 g
2024
Airbag Backpacks
ABS
A.Light E
Type: electric
Weight: 2.290 g
2024
Airbag Backpacks
Mammut
Pro 35
Type: canister
Weight: 2.625 g