ESNCE™️ anti-odour technology (powered by Ionic+® Antimicrobial Technology) so you can sweat as much as you like without worrying about the smell • Breathable design to keep you cool • Reflective logos for increased visibility • Seamless construction for increased comfort and maximum focus 74% Polyester, 19% Nylon, 7% Ionic+® Recycled Polyester • This product contains fibres treated with a silver silica additive to help prevent odour.