Soft vs Stiff Skis: Ski Flex Patterns and Ratings Explained


The flexibility of a ski greatly impacts how it feels and performs. It’s very important that you choose a pair of skis which have the right level of stiffness for your physique, style and ability level.

I’ll be explaining the difference between soft and stiff skis and their pros and cons so you can decide which pair of skis are the best for you.

Ski Stiffness 101

Softer skis with more flexibility are better suited to shorter and lighter skiers. Stiffer skis are better for taller and heavier skiers and more aggressive styles. Soft skis feel more forgiving and are better for beginners whereas stiffer skis feel more stable at high speeds and are more responsive.

There are two types of flex to consider when determining the overall stiffness of a ski:

  • Longitudinal flex
  • Torsional flex

The flex pattern of a ski refers to both its longitudinal and torsional stiffness.

Longitudinal Flex

Longitudinal flex refers to the flexibility of the ski lengthways (from the tip to the tail). The flex rating given by the manufacturer generally refers to how soft or stiff the longitudinal flex is. It is affected by the length and materials used to make the core and structural layers.

Longitudinal flex affects:

  • Speed
  • Stability
  • Responsiveness

Less longitudinal flex = stiffer = more stable, faster and responsive

Hence, having less longitudinal flex is preferred by more advanced skiers whereas beginners will usually prefer a ski with more longitudinal flex as it feels more forgiving and easier to learn on. The added stability provided by a stiffer ski is not needed for the lower speeds beginners are travelling at.

Torsional Flex

Torsional flex refers to the flexibility of the ski widthways (from one edge to the other). The torsional flex is typically not graded by manufacturers but it is still important to consider. Torsional flex is determined by the composition and layout of the ski’s structural layers.

The amount of torsional flex a ski has affects how easy it is to turn and carve.

Less torsional flex = stiffer = more edge hold

A ski with more torsional flex makes turning easier and is often preferred by beginners. A ski with less torsional flex will feel stiffer and provides more grip making it feel more powerful. Hence, more advanced skiers often prefer stiffer torsional flex.

Ski Flex Ratings

Most manufacturers will rate their skis on a scale of 1-10 with 1 being the most flexible and 10 being the stiffest.

Ski Flex RatingDescription
1-2Soft
2-3Soft-Moderate
5-6Moderate
7-8Moderate-Stiff
9-10Stiff

You can use the flex rating when trying to narrow down your selection of available skis.

However, keep in mind that there is no universal flex rating for skis. The scale for every manufacture will be slightly different.

For example, a pair of skis by Salomon and Volkl are unlikely to have the same flexibility even if they have the same flex rating.

Soft vs Stiff Skis

The appropriate stiffness of your skis will depend on your:

  • Height
  • Weight
  • Skill-level
  • Preferred terrain/