1. Capacity and compartmentalization

Capacity

The capacity of your backpack will depend on the length and nature of your outings. For day trips, a capacity of 20 to 30 liters is generally sufficient. For multi-day hikes, a 40 to 50-liter bag is more appropriate. It's important to choose a backpack that offers enough space to carry safety equipment (avalanche transceiver, shovel, probe), a change of clothes, food, water and possibly bivouac gear.

Compartmentalization

A good ski touring backpack should offer intelligent compartmentalization for easy access to your gear. Look for models with specific pockets for safety gear, compartments for wet and dry clothes, and external pockets for small items. A dedicated compartment for the hydration system is also a plus, allowing you to stay hydrated without having to remove the bag.

2. Comfort and Ergonomics

Carrying system

Comfort is paramount on long climbs. The carrying system must be well designed to distribute weight evenly over shoulders and hips. Look for backpacks with adjustable, padded shoulder straps and an ergonomic waist belt. Some models also offer a ventilated back panel to reduce perspiration and improve comfort.

Adjustability

Adjustability is another crucial aspect. A ski touring backpack must be able to adapt to different body shapes. Shoulder and hip straps should be easily adjustable to guarantee optimum support. Some models also feature adjustable chest straps to stabilize the bag on descents.

Weight

The weight of the backpack is an important factor, especially on long ascents. Opt for a lightweight but sturdy model, made from resistant materials such as nylon or polyester. Ultralight backpacks are ideal for fast outings, but make sure they offer enough functionality and comfort for your needs.

3. Specific features

Ski and snowboard racks

A good ski touring backpack should be equipped with ski or snowboard carrying systems. Diagonal or A-shaped ski racks are the most common, offering secure attachment and easy access. Some models also offer vertical or horizontal snowboard racks. Make sure the carrier system is sturdy and easy to use, even when wearing gloves.

Hydration system

Dehydration can quickly become a problem on long ascents. A ski touring backpack should be compatible with a hydration system, such as a water pouch or water bottle. Look for models with a dedicated compartment for the water pouch and outlets for the hydration hose. Some bags also offer side pockets for water bottles.

Accessories and options

Ski touring backpacks can be fitted with various options and accessories to enhance their functionality. Among the most useful are compression straps to stabilize the load, ski pole attachments, pockets for sunglasses or masks, and rain covers. Some top-of-the-range models also feature integrated safety systems, such as anti-avalanche airbags.

4. Durability and materials

Materials

Durability is an essential criterion for a ski touring backpack. Materials must be abrasion-, tear- and weather-resistant. Nylon and polyester are commonly used for their strength and lightness. Backpacks with Cordura or Kevlar reinforcements offer extra protection against tears and wear.

Weather resistance

Mountain weather conditions can be unpredictable. A ski touring backpack needs to offer some resistance to the elements. Look for models with water-repellent treatments or waterproof coatings. An integrated rain cover is also an asset for protecting your equipment in the event of heavy precipitation.

Choosing a ski touring backpack is a crucial decision for advanced skiers. By taking into account capacity, compartmentalization, comfort, specific features and durability, you can find the ideal backpack for your mountain adventures. Don't forget to check compatibility with your other equipment and test the backpack with a load similar to the one you'll be carrying on your outings. With the right backpack, you'll be able to make the most of every ascent and descent, in complete safety and comfort.