Fixed-Fit multi-layer inner boot system; Thermaplush soft, next-to-foot wicking layer for warmth; Form fitting B-Tek Foam lining for comfort; B-Tek Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperatures; Fixed frost plate returns heat and reflects cold for temperature regulation; B-Tek Dry Waterproof Breathable; Stylish leather upper; Slip-on style with pull loop at the back and neoprene side panel for ease of entry; IceBite Grip for greater slip resistance on ice than conventional rubber; EVA midsole for lightweight insulation and cushioning