Light and breathable Men's Base layer made from pure merino wool. Perfect for winter wear in the outdoors this long sleeve thermal top is no itchy, naturally antibacterial which means you can it for multiple days with odour. Icebreaker Men's Oasis Crewe uses flatlock stitching and a seamless underarm construction which reduce friction from internal seams. Deservedly popular that is one our best selling winter thermal tops for Men. Oasis Crewe is made from 200 g/m 100% Pure Merino - this is good mid weight which allows for active use throughout the Autumn, spring and winter.