La Sportiva believes that their new G-Tech Mountaineering boots could become the new benchmark for technical mountaineering boots! In particular, it represents the perfect combination of ultra-lightweight construction durable materials superior comfort and elite performance for technical ice climbing and mountaineering. The inner Core-Wrap Shell has an overlapping structure which balances weight and warmth and the BOA Fit System allows you to adjust the lacing closure while wearing gloves. Ice-Trek tread splits the outsole into two parts: Vibram Litebase at the front for great climbing traction (and lower overall weight) and Vibram Springlug at the heel for greater comfort and cushioning.