From now on, freezing is a thing of the past: the warm Olympus Half Zip long sleeve shirt from Mons Royale makes sure of that. The shirt is made from medium-weight, highly insulating merino wool and has the soft, breathable and odor-repellent properties of pure merino wool, while flat seams and raglan sleeves prevent chafing from backpacks or climbing harnesses. The shirt has a close fit and breathable mesh inserts in the armpit area. The short front zip provides extra ventilation.