evo.com | ION Jerseys > The ION Ionic Merino Short Sleeve Jersey is made for riding in cold weather conditions, thanks to its wool, polyester blend fabric that wicks moisture while keeping your core toasty warm. Slim Fit Fast Drying RWS Certified and Mulesing Free Merino Wool Blend 50% Wool (Merino) / 50% Polyester Odor Resistant and Antibacterial | ION ic Short Sleeve Jersey 2026 - Small in Gray | Wool/Polyester