Synthetic fiber expedition range for tough conditions – from tundra to taiga, the Tyin MTI is ideal for damp and cold regions in the far North.\n\nTrinity Construction provides greater protection and better insulation in the foot and head areaAdditional layer of fiber for improved insulation in the foot areaHot Head Hood – with 4 layers of fiber for maximum insulation in the head areaAll materials are designed for longevity and durabilityAjungilak® MTI™ Endurance: very robust synthetic fiber fillingshelterTX™ around the foot box and hood for optimum moisture protectionInside zip pocket Mammut Tyin MTI 5-season Bison | Buy Mammut Tyin MTI 5-season Bison here | Outnorth