Octa®

Octa® is a high-performance hollow-core fiber developed by Teijin Frontier in Japan. Its unique radial structure combines lightweight warmth, excellent breathability, and quick-drying capability. The hollow center helps trap heat while reducing weight, and the open outer surface promotes efficient moisture release and ventilation.

Available in multiple fabric weights, Octa® adapts to a wide range of uses—from lightweight base layers to midlayer insulation. Unlike traditional fleece or down, Octa® keeps you warm and dry even during high-output activities such as hiking, skiing, and fastpacking.

Wowool continues to develop Octa® garments in different thicknesses and cuts, offering versatile thermal solutions for movement-focused performance in Taiwan’s ever-changing outdoor conditions.