Icebreaker’s best-selling baselayer, this Men’s 200 Oasis Long-Sleeved Crewe top is designed for year-round wear and all-day comfort. Crafted from 100% pure Merino wool, this baselayer is highly breathable and regulates body temperature, whether you are keeping cool or staying warm, as well as naturally resisting odours. Keep comfortable whilst you’re mobile with the stretchy fabric and gusseted underarms with flatlock and offset shoulder seams to prevent chafing. Our versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is our best-selling base layer top. 100% Merino wool - Soft, lightweight and naturally odour resistant fibre that keeps you warm when it's cold and cool when it's warm. Gusseted underarms for mobility and comfort. Offset shoulder seams to help reduce friction. Flatlock seams to help reduce friction. Drop tail hem for added coverage.