What is the 3F System®?
Salewa’s 3F System® is an innovative footwear technology that blends three key elements essential for alpine performance: Flexibility, Fit, and Support. This unique design delivers precision, stability, and freedom of movement without compromise, meeting the dynamic needs of modern mountaineers and outdoor adventurers. > The system integrates advanced materials and engineering principles to reinforce the natural biomechanics of the foot, ensuring superior comfort and performance across technical and rugged terrains.
The 3 core functions
Flex
Salewa’s 3F System® ensures natural movement with anatomical ankle flexibility, secure instep-to-heel connection, and strategically placed materials to reduce fatigue—delivering control without restriction.
Fit
The 3F System® locks the heel, customizes volume with MFF+ (Multi-fit Footbed) or C.F.F (Custom-fit Footbed) and fine-tunes fit with climbing laces—eliminating slippage for all-day precision and comfort.
Support
The 3F System® delivers lateral stability, a dynamic heel lock, and flexible ankle support—ensuring control, balance, and confidence on any terrain.
Key Benefits of the 3F System®
- Enhanced Performance: natural foot movement combined with precision support ensures agility and stability in alpine conditions.
- Reduced Fatigue: strategic flexibility and dynamic fit minimize energy loss and foot strain over long durations.
- Improved Comfort: customizable fit systems and anatomical designs adapt to individual foot shapes for a glove-like feel.
- Optimized Safety: secure heel hold, lateral support, and ankle flexibility reduce the risk of twists, sprains, or injuries.
