Upper:Mid-height, stylish suede and leather upper with sweater collarD-Ring front lace fastening system for secure comfortBase:IceBite® Grip for greater slip resistance on ice than conventional rubberEVA midsole for lightweight insulation and cushioningPremium Rubber outsole for flexible durabilityRemoveable anti-fatigue insoleInsulation:Fixed-Fit multi-layer inner boot system featuring:Thermaplush™ soft, next-to-foot wicking layer for warmthForm-fitting -Tek™ Foam lining for comfort-Tek™ Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperaturesFixed frost plate returns heat and reflects cold for temperature regulation