Peg your heart rate, eye your summit, and let the Inhaler II Mid do its thing. The GORE-TEX waterproof, breathable liner with Extended Comfort Technology, sits just behind expansive air-mesh panels and 1.6mm leather, breathing as you bust out the effort. Ventilation ports at the toe and heel help keep the airflow high, making the Inhaler II Mid the perfect desert boot. Below all this respiration is a Vibram Pneumatic sole, featuring Megagrip compound rubber - just the kind of grab you'll need covering the miles. GORE-TEX with Extended Comfort Technology. Dual Density EVA Footbed. Vasque Exclusive Vibram Pneumatic with Megagrip Compound.