Mammut Arctic Imperial-Ultramrine Melange Blue Midlayer The Mammut arctic midlayer is great for keeping you cosy in the cold, it features Polartec ThermalPro which guarantees a warm fleece that is lightweight, breathable, and fast drying so that you can wear it whatever the weather! The flatlock seams not only reduce bulk but also add comfort and range of movement, and the high neck has a concealed chin protector and a full length zip to suit your style. Key features 100% polyester Polartec ThermalPro Flatlock seams 2 side pockets with zippers Concealed flat chin protector Regular fit Mammut Arctic Imperial-Ultramrine Melange Blue Midlayer