From Vasque's website: A sure bet for peak bagging in ranges that don't require the warmth of a double boot, the S.A.'s Exo-Therm™ uppers, Stealth® rubber outsole, and carbon fiber insole make it a flexible, agile performer in big mountains.
Exo-Therm™ 3-layer composite upper is lightweight, flexible, durable, and warm.
Protective rubber toe rand.
Step-in crampon compatible.
Lightweight carbon fiber insole.
EVA midsole for cushioning.
Skywalk® Fitzroy Stealth® rubber outsole technology.
Insulated Drilex lining and footbed.
Weight: 4 lbs 10 oz (size 9) [2100 g]