La Sportiva thinks their new, G-Tech Mountaineering boot may be the new reference point for technical mountaineering boots! In particular, it's pulled off the perfect blend of ultralight construction, durable materials, superlative comfort, and elite performance for technical ice climbing and mountaineering. The internal Core-Wrap Shell has an overlap structure that balances weight and warmth while the BOA Fit System lets us adjust the lacing fastener while wearing gloves. The Ice-Trek Tread divides the outsole into two sections— there's Vibram Litebase up front for great climbing grip (and less overall weight) and Vibram Springlug on the heel for more comfort and shock absorption.