2XU HI Fil Tri Singlet: Engineered with a combination of HIGH FIL MESH & SENSOR MESH X, this essential Tri Singlet offers maximum airflow & moisture control through high filament polyester yarns. Offering front zip for ventilation, pockets for essentials plus premium UV protection, this Singlet is ideal for triathletes of all abilities. A looser-fit assures comfort. Flatlock stitching Contoured panelling Rear pockets Sensor mesh x High fil mesh