The Aura is a women's big mountain ski for experts and near-experts that can also take on the groomed when the snow gets firm. It has a 94mm waist, a full Sensorwood Light core and 2 sheets of Titanium for stability in any snow condition. My wife says this is the best ski she has ever skied, and perfect for Stevens Pass. Schizo technology breaks new ground, offering skiers the ability to move their stance fore/aft 3cm in each direction for the ultimate versatility. It allows the skier to go from hard, groomed snow to powder with the turn of a simple screw on the toe piece, while you sit on the chair for your next run. For all-mountain versatility and powder riding, you want to stand further back on the ski. For groomed packed powder riding, you want to be further forward.