Mammut Run

Frequently Asked Questions

• How do Mammut Aenergy Mtn Low GTX shoes handle wet, technical mountain trails?

  The Aenergy Mtn Low GTX pairs a GORE‑TEX stretch membrane for waterproof breathability with aggressive 4–5 mm lugs and a sticky Vibram/Mammut outsole, so it sheds water while keeping traction on wet rock and mud. A rocker sole and Flextron® shank provide smooth toe‑off and torsional stability, helping reduce fatigue and ankle twist on technical descents.
• What’s the difference between the Aenergy Mtn Low GTX and the Aenergy Hike Low GTX?

  The Aenergy Mtn Low GTX is tuned for faster, more technical trail running with a more flexible last, rocker profile, and a lighter feel, while the Aenergy Hike Low GTX is a trail/hike hybrid that emphasizes additional underfoot protection and comfort for longer, mixed‑terrain days. Both use GORE‑TEX waterproofing and similar aggressive outsoles, so choose the Mtn for speed and responsiveness and the Hike for extra durability and hiking comfort.
• When should I pick GORE‑TEX Mammut jackets or shoes versus non‑waterproof pieces?

  Choose GORE‑TEX (e.g., Aenergy GTX shoes, Ducan Guide HS jackets) for sustained wet, cold, or snowy conditions where waterproofing and high breathability (many Mammut shells reach ~20,000 g/m²/24h and 20,000 mm columns) matter. For fast, aerobic runs in dry or warm conditions, non‑waterproof, more breathable and lighter pieces will ventilate better and reduce weight for speed.
• How does Flextron® technology affect trail performance and which Mammut shoes use it?

  Flextron® is a torsional shank that stabilizes the midfoot, improves energy return through the gait cycle, and helps limit ankle roll on uneven terrain—benefits that make longer, technical efforts less fatiguing. Mammut’s Aenergy line prominently uses Flextron® to balance agility and stability for fast mountain runs.