• Memorial Day Sale – 25% off site-wide

    You bring the adventure and we’ll bring the gear. Meet you at the checkout with 25% off site-wide – just in time for the long weekend.

  • Recall for Skywalker Pro Via Ferrata

    We have identified a potential issue with the locking mechanism of the carabiners used in the Skywalker Pro Via Ferrata and the Skywalker Pro Turn Via Ferrata Sets, sold since 2023. As a result, we have decided to recall all potentially affected products and refund all impacted clients.

Aenergy ST 20-25

Lightweight technical ski touring backpack  

$120$159.95–25%

Mammut red-black

  • Mammut Aenergy ST 20-25 - mammut red-black, 20-25 L - Mammut red-black - Thumbnail
20-25 L
With this lightweight ski touring backpack, you'll be effective on the snow without sacrificing comfort, durability or features. Inspired by the design of a trail running vest, the ergonomic suspension system guarantees a tight fit without restriction, keeping the load stable and close to your back....
  • 6 out of 6
    6/6
    Ski Touring
  • 4 out of 6
    4/6
    Freeriding
  • 4 out of 6
    4/6
    Mountaineering
  • Carrying system inspired by trail running vests
  • Speed ski attachment
  • Large mesh pockets on the shoulder strap
  • Elasticated chest strap for optimum comfort and a perfect fit
  • SellingPointHartware1340
  • Rolltop closure with zipper
  • Back zipper access to main compartment
  • Front pocket for avalanche safety equipment
  • Hydration system-compatible
  • Front compression can be removed and used as a hip belt
  • Rope attachment on flap
    • Mountaineering, Ski Touring, Mountain Training
    • 2560-00172
    • Suspension systemCONTACT
    • Rain coverNo
  • LengthHeightBack length (size system)WidthWeight
    20-25 L18.00 cm46.00 cmM (46 cm)29.00 cm740 g

  • Main material100% Polyamide

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