What Our Gearhead(R) Experts Are Saying:"The Aenergy SO Hybrid Pant has become my default for any day where the skintrack is long and the pace is high. The storm fleece inserts on the back of the thighs make a real difference on cold exposed ridgelines without adding any of the weight or bulk that would slow me down on the climb."Fast and light ski touring demands gear that makes decisions the same way a strong skinner does: cut everything that doesn't earn its place and keep everything that does. The Mammut Aenergy SO Hybrid Pant was built around exactly that philosophy, using a strategic combination of fabrics across different zones to deliver breathability, stretch, and wind protection precisely where each is needed most. The double-woven softshell face fabric handles wind and moisture wicking across the primary panels, while Stretch Stormfleece inserts on the back of the thighs and knees add targeted warmth and freedom of movement in the zones that need both during a hard skintrack push. The result is a pant that stays comfortable through the sweaty work of a sustained ascent and holds warmth on the exposed ridge at the top without ever feeling like a compromise in either direction. A pre-shaped knee section, asymmetric hem designed specifically for mountaineering boots, and Cordura reinforcement at the leg hem round out a construction that is built for the specific demands of moving fast in serious alpine terrain.