This jacket is used. There is some dirtyness but it will likely wash out and be a great jacket. The majority of the dirtiness is at the cuff of the sleeves. Otherwise the jacket is in good condition.
Over or under, you decide. The men's Mammut Arctic ML (mid layer) is a cozy Polartec Thermal Pro fleece jacket you can wear under a hard-shell jacket or as a breathable outer layer.
High-quality Polartec Thermal Pro fleece offers an ideal warmth-to-weight ratio; fabric has large pores that store your body warmth for excellent heat retention
Fabric also dries quickly after demanding ascents
Flatseams add comfort and prevent chafing under pack straps
Concealed chin protector
Hand pockets with zippers