Technology Roxy WarmFlight 3 with 200 grams thermal insulation, weather-resistant down to -40°C/-40°FUpper water-resistant treated suedeScotchgard™ treated materialsUpper detail laces with metal eyelets and D-ringsBellows tongue with sherpa collarClosure system Hiking-inspired lacesInterior shaft and insole lined with sherpa with woven label RoxyOutsole Rubber outsole with rugged lugs Roxy Alpine and a soft TPE insole.Packaging boxHeel height 40 mm heelComposition Upper 82% Leather / 16% Polyester 2% Metal - Lining 100% Polyester - Outsole 100% Rubber