The Omaha Polo features the brrr° cooling fabric for the dog days of summer. This classic three-button polo comes with a traditional spread collar. Proprietary Blend: 44% Cotton | 31% brrr° Polyester | 20% brrr° Nylon | 5% Spandex. This proprietary blend offers the best in cooling performance technology, all-day comfort and classic style. The cooling effects of brrr° are independently lab tested and verified, and will help you feel dry and comfortable when life brings the heat.  brrr° technology 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.