This is the shirt that started it all. A few years ago, I was searching for a golf polo that didn't contain polyester but also performed better than cotton in sport conditions. It was then that I discovered merino wool and its amazing properties including temperature regulation, odor resistance, breathability, fast drying, stretchability, and more. I discovered this polo from Wool & Prince and immediately bought one. I love it. I was amazed and am still amazed at the odor resistant properties of merino wool. You don't even need to wash it. After a few wears, just spray the stinky areas with water and hang the garment up to air dry. Good as new. Wool & Prince will even give you $100 if you wear it for 100 days straight.