1. Release system: pneumatic vs. electronic

The first thing to consider is the type of release system. Airbags can be fitted with either pneumatic or electronic systems:

• Pneumatic systems: These systems use a compressed gas cartridge (usually CO2 or nitrogen) to inflate the airbag. The main advantage is mechanical reliability and the ability to refill the cartridges yourself. However, it is crucial to check cartridge weight and pressure regularly to ensure proper operation.

• Electronic systems: more recent on the market, these systems use a battery to activate a fan that inflates the airbag. The major advantage is the ability to trigger several times without needing to recharge the system, which can be crucial on multi-day outings. They are also easier to prepare before each outing, but require a battery charge and are generally more expensive.

2. Bag volume and configuration

Your choice of airbag volume will depend on your specific use. Volumes generally range from 10 to 40 liters. For day trips, a 20 to 30-liter bag offers a good compromise between storage capacity and compactness. For multi-day expeditions, consider models of 30 liters or more, which allow you to carry additional equipment such as food, water and a change of clothes.

In addition to volume, the bag's configuration is also important. Make sure it has enough compartments for efficient organization of your gear, as well as external bindings for skis, snowboards or ice axes. Some bags also offer mounting options for helmets and other safety equipment.

3. Comfort and fit

An airbag needs to be comfortable, as it will be worn for long periods and often in difficult conditions. Elements to consider include:

• Carrying system: Look for ergonomic shoulder straps, a padded back and a sturdy hip belt. These elements help distribute weight more effectively and increase overall comfort.

• Fit: The bag should fit correctly at your waist. Some models are available in different back lengths or with adjustable straps to better adapt to different body shapes.

• Ventilation: A good ventilation system on the back is crucial to avoid excessive perspiration during intensive climbs or long days on the slopes.

4. Reliability and certification

Make sure your airbag is certified to current safety standards. Certifications such as TÜV guarantee that the product has been tested and meets strict safety criteria. In addition, check the manufacturer's reputation and read user reviews to assess the system's reliability under real-life conditions.

5. Total weight

Weight is a crucial factor, especially for outings where every gram counts. Pneumatic systems are generally lighter than electronic ones, but the choice will also depend on the volume of the bag and the materials used. Look for a balance between safety, functionality and lightness.

Choosing the right airbag is a complex decision that needs to take many technical factors into account. Carefully weigh up system type, volume, comfort, reliability and weight to find the model that best suits your off-road needs. A good airbag is an investment in your safety, and can make all the difference in the event of an avalanche. Take the time to select the right equipment, and you'll be able to enjoy off-piste skiing and snowboarding with added peace of mind.