The RÆBURN Men's Standard Issue Milano Knit Crew has been manufactured in Portugal and produced in a 12 gauge Milano knit with 1x1 rib at neckline, and hems using 100% Merino Wool. Merino wool is a natural fibre grown year-round by Merino sheep on farms around the world. Every year these sheep produce new fleece, making wool a completely renewable fibre and Merino wool is the world’s finest and softest wool in the world. Its natural benefits are so great that no other fibre - natural or man-made - can match it for its quality and versatility. These items meet Standard 100 by Oeko-Tex® confirming they have been tested for harmful substances and certified by Woolmark with regards colour fastness meeting standards TM250, TM165 and TM5. All Standard Issue product feature the RÆBURN parachute emblem, a mark of responsible design and quality.