Mont Blanc Boa Sneakers By Altra. Featuring: Low-top Slip-on Design Pull Tab Performfit Wrap Powered By A Two-dial Boa® Fit System Closure Standard Footshape Fit And Altra Ego Max Midsole Foam Textile And Synthetic Upper Printed Logo At Side Serrated Rubber Sole Vibram Outsole Composition: Upper, 50% textile, 50% synthetic Lining, 100% textile Sole, 100% rubber