Icebreaker 200 Oasis L/S Crewe Merino base layer (M, blue) - Whether you're skiing, hill walking, trekking, travelling, mountaineering or just going about your everyday life, the Icebreaker 200 Oasis LS Crewe long-sleeved shirt is guaranteed to serve you well. This high-quality long-sleeved shirt is made of 100% merino wool, which is naturally odour resistant and temperature and moisture regulating. Apart from keeping you warm in the cold, the fabric also has a pleasant cooling effect in warm weather. The flatlock seams, which are offset at the shoulders, prevent unpleasant chafing, especially when you're wearing a backpack. The underarm gussets allow for plenty of freedom of movement, keeping you comfortable at all times. A great long-sleeved shirt for many occasions - the Icebreaker 200 Oasis LS Crewe.