The best of baselayers from the iconic Icebreaker. The Men\'s Merino 260 Tech Long Sleeve Half Zip Thermal Baselayer is engineered from 100% Merino wool for superior temperature regulation and odour resistance. Gusseted underarms, offset and flatlock seams work in unison to provide a frictionless fit, for all day comfort.100% Merino - regulates temperature and resists odourGusseted underarms - for mobility and comfortHalf-zip fasteningOffest shoulder seams - prevents frictionFlatlock seamsBackward set side seamsSlim fitMaterial: 100% Merino woolFabric weight: 260 midweightWeight: 320g (approx.)