KSO WOMEN'S The KSO is arguably our most successful FiveFinger to date, mainly due to its versatility. We added this back into the mix a few years back to celebrate the rebirth of a legend. When you're scrambling up a rocky bluff or bounding along a riverbank, the last thing you want is gravel and grit seeping into your FiveFingers. So why not Keep Stuff Out! The KSO has a snug fit, one of our most minimal sole constructions for maximum ground feel, and a breathable, quick drying upper. The KSO also features a thin, abrasion resistant stretch polyamide and breathable stretch mesh that wraps your entire foot to do just that. A single hook-and-loop closure helps secure the fit. Non-Marking XS Trek performance rubber soles are razor-siped for sure grip. Technology and Compound KSO Sole Vibram XS TREK is a technical compound that allows great overall performance qualities, in particular flexibility and wet traction. Highly responsive to the various demands of life, XS TREK will carry you from the trail to the urban playground and even to indoor activities, due to its non- marking features. Details WEIGHT: Men's 43: 5.9 oz., Women's 38: 4.71 oz.SOLE SPECS: Insole: Polyester Microfiber, Midsole: N/A, Rubber: 3.5 MMUPPER MATERIAL: Stretch Polyamide, Polyester, Hypalon(R)Machine Wash Cold / Air Dry XS TREK Compound Optimal balance of traction and durability Responsive on unpredictable terrain Engineered for stability and comfort Our Vision & Mission VIBRAM creates innovative performance products that inspire people to experience the world. VIBRAM has a great vision: maintaining and strengthening its market leadership by offering reliable, high quality and high performance products for people who lead active lives. This mission has stayed the same over the years – Innovation, performance and quality – so that the company always lives up to its brand tradition. VIBRAM creates the best soles in the world.