The IceBreaker Oasis Stripe Women's Long Sleeve Hooded Running Top is engineered with merino wool. This lightweight construction has great thermoregulation and moisture-management properties designed to help provide core body temperature stability, lower your heart rate and manage sweat effectively. A fitted hood provides extra cold weather protection when you need it, and is sleek enough to fit underneath a climbing helmet. A zip neck provides ventilation during intense periods of exercise, and allows for easy on and off. Flatlock seams minimise chafing and irritation, so you can exercise in comfort.