Superfine merino wool is the secret to the advanced performance of the Icbreaker BodyFit200 Oasis Long-Sleeved Crewe for Women. This soft, comfortable, eco-friendly fiber retains body heat but does not hold moisture or odor, making it suitable for a wide range of activities year-round. Raglan sleeves and flat-sewn seams in the side gusset allow you to move without constricting or chafing.