"Waterproof and insulated, the Salewa Puez Winter Mid PTX Hiking Boot is a mid-height winter hiking boot with a PFAS-free membrane that lets moisture out. The toe box uses PrimaLoft Gold insulation for extra warmth on colder days. What Our Gearhead® Experts Are Saying:""The outsole bites into the glazed ice on my driveway and holds on packed snow going downhill, so I'm not babying my steps on either. The heel stays planted when the trail tips down, which is why one boot covers my errands and my weekend hikes."""