Materials For FiveFingers KSO Shoes:
*UPPER - Abrasion-Resistant stretch polyamide fabric & Hypalon straps
*SOLE- Vibram TC-1 performance rubber
*FOOTBED- Antimicrobial microfiber

In just over a year, the KSO has become our most popular model for men. Featuring a thin, abrasion-resistant stretch nylon and breathable mesh upper that wraps your entire forefoot to "Keep Stuff Out." A single hook-and-loop closure helps secure the fit. A non-marking 3.5mm Vibram TC1 performance rubber sole is razor-siped for a sure grip, and a 2mm EVA midsole enhances plating protection and comfort.

*Vibram Five Fingers KSO Is Best For: Running, Fitness Training, CrossFit, Light Trekking, Bouldering, Water Sports & Travel
*Machine washable. Air dry.