Gaiter: PU Tek and Schoeller fabric with HDry waterproof technology keeps you dry; Water Repellent Zip: Heat-sealed zip with updated pull tabs for ease of use; Shell: Microfiber face with 8-layer insulation system featuring Wintherm and aluminium film and Sockfit XT; Inner Boot: Primaloft Black and Primaloft Gold Eco insulations combine with an Ortholite/Aerogel footbed for lightweight warmth; Midsole: Dual-density PU midsole for durable impact absorption; Outsole: Vibram Durastep sole and Dynamic Tech Roll system provide secure and efficient walking