From ECCO, the ULT-TRN Low Sneakers feature: Modern, lighter look with a mix of oiled nubuck and nubuck leathers made in ECCO's gold-rated tanneries using water-saving DriTan™ Technology, and a premium textile ECCO’s own PFC-free waterproof membrane keeps your foot dry and cozy Shank provides the additional stability you need when hitting the trails Lace up Cushioning and flexibility with ECCO FLUIDFORM™ Direct Comfort Technology Soft, ultra-light PHORENE™ midsole for bounce and energy return Innovative, distinctive outsole with Michelin rubber, multi-directional grooves and two distinct zones for grip, durability and support Imported.