The 126th U.S. Open Championship Guide Sport Quarter-Zip is designed for peak performance in changing conditions. Crafted from a lightweight technical blend powered by brrr° technology, it delivers a natural cooling sensation with moisture-wicking and quick-drying comfort. The modern athletic fit and technical detailing make it equally suited for any workout or everyday wear. This officially licensed product is part of a limited-edition capsule by Greyson for the 126th US. Open Championship. 94% Nylon | 6% Spandex This proprietary blend offers the best in cooling performance technology, and all-day comfort. The cooling effects of brrr° are independently lab tested and verified, and will help you feel dry and comfortable when life brings the heat. About brrr° Technology:brrr° combines the power of natural cooling minerals, active wicking and rapid drying technologies that work together to create a Triple Chill Effect™ that instantly and continuously draws heat and moisture away from the skin Machine Wash Cold With Similar Colors | Only Non-Chlorine Bleach If Needed | Tumble Dry Low, Remove Promptly | Warm Iron Is Needed