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. Features & details 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