K-SWISS Women's Blade-Max Trail Running Shoe Rubber 3-D Posting - Engineered motion control posting to gently ease the foot back to the center of the shoe. ASTA II Rubber Compound - High-density outsole provides unsurpassed durability from heel to toe. Flow Cool System - Enhances breathability and moisture management from heel-to-toe to keep feet cool and dry. GuideGlide - A unique midsole construction that centers the foot from heel-to-toe ensuring a more comfortable and stable ride. K-EVA - Special formula EVA to provide maximised cushioning and enhance durability of the midsole.