Our best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Leggings With Fly are the perfect foundation for your cold-weather layering. Features & details 100% Merino wool (excluding waistband) - Soft, lightweight and naturally odour resistant fibre that keeps you warm when it's cold and cool when it's warm Contoured pouch with functioning fly Gusset for mobility and comfort Flatlock seams to help reduce friction