Per the Asolo website:
"Vibram® gives these Asolo Route Mountaineering boots strong footing and Gore-Tex technology adds their guarantee to keep your feet dry."
- Asoflex Ascent lasting board
- Removable footbed
- Vibram® Ascent rubber outsole
- Dual-density microporous rubber midsole
- Double rivet lace-lock hook across midfoot
- 3 lb. 12 oz. pr.
I have had these for three seasons now and have just astounished me at their durability, warmth, protection, outstanding stability for front pointing, sure footedness on rock and just plain incredible quality construction. Light and stable approach boots as well. They are no longer made but can periodically purchased on the web. They do require New Matic type crampon bindings. Over-all, these are my Summer Alpine Ice boots and they are just perfect!