The Tardiz II focuses on the needs of the triathlete; the aerodynamics of a TT helmet combined with the ventilation & comfort of a road helmet. The Tardiz was the first helmet designed exclusively with the specific needs of multi-hour triathlon racing in mind. Aerodynamic performance without the risk of overheating. Vents assure airflow over the rider’s head with the Aquavent. The Aquavent is a spring-loaded ventilation port on the top surface of the helmet which allows the option of delivering water into the helmet to prevent overheating. Press the vent cover down with your water bottle & dump in cooling water Special perforated EVA padding & EVS channelling allows the water to filter down the back of your head & not down your face Dual Layer Aerodynamics a front smooth surface & a back dimpled surface provides the best possible airflow over & around the helmet Soft ear flaps make for a great fit & quick on & offs in transition Eyewear channels make it easy to fit around your favourite Lazer eyewear without interference between the eyewear arms & ear covers Weight: 340g (Size S)