The Resistance baselayer features an integrated anti-bacterial treatment for odour control during intense workouts. Specially-designed seams prevent rubbing for ultimate trail comfort. This long sleeve baselayer is made from lightweight and quick-drying Polyester fabric. It includes anti-bacterial treated fabric for odour control and stretchy mesh side panels for enhanced breathability and freedom of movement. Main: 100% Polyester, Mesh Panels: 88% Polyester/12% Elastane.