The all-new Men's Merino 200 Oasis Long Sleeve Half Zip from Icebreaker is the ultimate thermal base layer for winter. Crafted from 100% Merino wool, this top is soft, lightweight, naturally odour resistant, and keeps you warm yet remains breathable. It features gusseted underarms to aid mobility and offset shoulder seams to help reduce friction, making it ideal for winter activities such as hiking and skiing. The Men's Merino 200 Oasis Long Sleeve Half Zip from Icebreaker is the perfect layering piece for winter. The benchmark against which all others are judged, the Merino 200 Oasis Long Sleeve Half Zip features our most versatile merino wool jersey fabric for year-round layering performance across any activity.