The Oasis Half Zip is the ultimate long sleeve base layer. It’s made from Icebreaker’s super-soft, 200gm merino jersey fabric, delivering warmth in cold conditions while breathing well as the body heats up. It’s merino wool construction wicks away cold sweat and resists unwanted odour build-up. The convenient half zippered collar allows for instant temperature regulation. This base layer also has offset shoulder seams, set-in sleeves, and flatlock stitching throughout that prevents chafing.