Elevate your tee shirt game with the Arc'teryx Ionia Merino Wool Arc'word Logo Ss M. Made from Merino wool, a material known for temperature regulation and odour resistance, the Arc’Word Ionia is light, soft, breathable, and responsibly sourced. The construction wraps the wool’s fine-gauge fibres around a nylon core for added durability. The fit is streamlined and comfortable, and the articulated patterning moves with you on hikes, runs, tours, and treks.