Mid-height, Polyurethane (PU) coated leather and nylon upper; Gaiter clip at vamp for quick and secure attachment of accessory; Velcro at heel to keep the removeable inner boot secure to the base shell and upper; Slip-on style with pull loop at the back for ease of entry; Superlite Blend compound shell for a lightweight performance fit; LiteGrip Blend base for lightweight cushioning and grip; Polar Rubber outsole for maximized grip and longevity of boot at cold temperatures; Thermawick comfortable, hi-wick next-to-foot lining material for greater breathability and improved thermal regulation; Form-fitting B-Tek Foam lining for comfort; B-Tek Lite proprietary aero-insulation blend that allows the inner boot to achieve greater thermal regulation while using less material