The Tech Top Long Sleeve Half Zip is a warm and function midweight base layer of Icebreaker’s best-selling Oasis top. It’s heavier fabric weight, and thermal capacity makes it ideal for winter ski trips, cold weather hiking, and everyday use around in frigid cities. It's made from soft, breathable, and naturally odour-resistant 100% merino wool. The half zip design makes ventilation quick and easy while improving its also layering capabilities. Icebreaker also designed it with offset shoulder seams that reduce friction when wearing a backpack, while forward-set side seams and flatlock stitching eliminate chafing during high-output activities.