Trail Running Polyester Incorporates silver-ion antibacterial technology for long-lasting freshness Moisture-wicking, quick-drying fabric that rapidly pulls sweat away to keep you dry UPF 50+ sun protection to effectively block UV rays Seam-free bonded construction on the back panel reduces chafing for more comfort during trail runs Longer YKK front zipper for easy on/off and quick ventilation Reflective print enhances safety during night runs Athletic cut for a streamlined, unrestricted fit during movement Fit: Athletic