The Resistance baselayer comes with an integrated anti-bacterial treatment for odour control during intense workouts, along with specially-designed seams to prevent rubbing for ultimate trail comfort. Long sleeve baselayer Polyester fabric - lightweight and quick-drying Anti-bacterial treated fabric - for odour control Stretchy mesh side panels - for extra breathability and freedom of movement Main: 100% Polyester Mesh Panels: 88% Polyester/12% Elastane