Champion Shirt Mens M Duo Dry Black Quarter Zip Long Sleeve Athletic. The Champion Men's M Duo Dry Black Quarter Zip Long Sleeve Athletic Shirt is a versatile activewear top perfect for running and other active occasions. Made with 100% polyester fabric technology that includes anti-microbial and anti-odor properties, this shirt ensures comfort and performance during intense workouts. The 1/4 zip closure and long sleeves make it easy to put on and ideal for cooler weather, while the loose fit provides added mobility and flexibility. With its solid black color and Champion brand, this athletic shirt is a stylish and practical addition to any active wardrobe.