FLEXTRON

Get boosted with FLEXTRON. Our footwear technology delivers stability, support, and energy return for smart movement in the mountains.

We know that moment. Your legs feel heavy, footing less secure, but you still have miles left to go. That’s why we developed FLEXTRON and FLEXTRON PRO.

The technology helps to reduce strain on your feet and calves for smoother transitions and lasting comfort – all while keeping your shoes lightweight.

The benefits

  • Move faster above the treeline

    A spring-like plate boosts rebound energy during push-off.

    Benefit 1 image

  • Save your energy for another peak

    Less strain on your calves and feet means reduced fatigue and faster recovery.

    Close-up of a trail runner ascending a rocky incline, wearing black Mammut performance running shoes for mountain terrain.

  • Stay secure with every step

    High side walls and wrapping heel design enhance stability while staying flexible.

    Benefit image 3

Choose your activity

We've tailored the shank design and materials to each activity for precision support that is purpose built, not one-size-fits-all.

Hiking

FLEXTRON provides torsional stability with a rocker-profiled forefoot that optimizes energy efficiency and comfort over long distances.

Hiking image
Fast
hiking

FLEXTRON supports midfoot torsional stability and assisted propulsion for agile, efficient movement across rugged terrain.

Fast hiking image
Approach

FLEXTRON delivers enhanced stability and stiffness for precise, confident edging and secure foot placement on technical terrain.

Approach image
Trail
running

FLEXTRON PRO balances torsional stability with powerful propulsion to help you reach top speed on demanding mountain trails.

Trail running image

   

"Flextron
is
built
to
enhance
your
movement.
It
stabilizes,
adapts,
and
helps
you
go
further
with
no
complaints
from
your
feet."

Lorenza Kessler PRODUCT MANAGER FOOTWEAR

How the technology works

How the technology works image 1

Traditional hiking shoes can cause fatigue, ankle strain, and energy loss when you need it most. FLEXTRON acts like a springboard, boosting rebound energy as you push off, while an innovative shank delivers torsional stability for balance on uneven terrain, and high side walls secure the heel and midfoot. By reducing strain on your calves and feet, you can move more efficiently and recover faster.

Tested in collaboration with the Zurich University of Applied Sciences, FLEXTRON showed a measurable reduction in ground contact time and enabled quicker transitions from landing to takeoff.

Feel the power with FLEXTRON PRO

For maximum energy return when trail running, we developed FLEXTRON PRO. Built for those who like their trails technical and their pace fast, it provides the precise torsional stability needed for confident, high-speed performance.

FLEXTRON PRO stores and releases energy with every step to create explosive toe-off and smooth, responsive propulsion.

Flextron collage image 1
Flextron collage image 2

FLEXTRON PRO: trail running performance

Energy return

Propulsion and toe-off

Torsional stability

FLEXTRON PRO

Maximum rebound
Explosive propulsion
Extra torsional stability

Shop all FLEXTRON shoes