The Oasis Long Sleeve Half Zip is one of the most versatile base layers in Icebreaker’s collection. It’s made from super-soft and breathable 200gm merino jersey fabric, trapping in warmth during cool weather, while breathing well in warmer conditions. Flatlock seams prevent chafing, and off-set shoulder seams reduce rubbing when carrying a backpack. The drop hem provides rear coverage, while the half-zip neck delivers quick ventilation. Because the Oasis is merino wool, it can be worn several times between washings due to its natural odour free properties, making it an ideal base layer for mountain hikes and weeklong ski trips.