Icebreaker Men's Oasis Long Sleeve Half Zip 100% Merino Wool Imported The indispensable Oasis Half Zip is made with lightweight 200gm merino fabric to keep you warm on cool weather expeditions. Features a zip neck collar for temperature regulation, offset sleeves to eliminate pack rub, free seam flatlock stitching to prevent chafing and a drop-tail hem for added coverage. Slim fit for easy layering. Moisture wicking and breathable Naturally odor-resistant, Non-itch merino Crewe neck shape Offset shoulder seams prevent pack rub Flat lock seams prevent chafing