Aenergy ST 20-25 26/27

The Mammut Aenergy ST 20-25 is a lightweight ski touring pack with a carry system inspired by trail running vests. It weighs about 740 grams, holds 20 to 25 liters with its rolltop, and keeps the load close to your body on fast climbs.

The trade-off is a trim, speed-focused build. It skips a rain cover and heavy padding, so it favors fast tours over carrying big loads.

It is a great match for skimo racers, dawn patrol laps and fast ski mountaineering days where every gram matters.

Large mesh shoulder pockets and an elastic chest strap keep essentials handy, a removable front compression strap doubles as a hip belt, and the main compartment opens through a back zipper. There is a front avalanche gear pocket, a diagonal ski carry you can use without taking the pack off, a helmet carrier, ice axe and pole holders and a rope attachment. Back length is M (46 cm).

We love the Aenergy ST for light, fast days in the skin track.