Vibram V-Alpha Womens - BlackThe V Alpha is a wolf in sheep's clothing.. literally! The comfy, Merino wool blend upper belies a Vibram Megagrip performance sole that's ready for anything. On the trails, in the gym, running, training or just active outdoor living, the V Alpha will match you every step. Average Weight = 110 grams 3. 7 mm Vibram MegaGrip rubber outsole 2 mm Foam insole for added comfort 50 50 wool synthetic upper material for breathability and reduced odor Machine