The Tonic road cycling helmet reaps the benefits of Lazers long history of building cutting edge helmets. The TS+ Fit System offers progressive fit adjustment and eliminates pressure points and hot spots on your head- essential for long days on the saddle. Twenty-eight vents ensure plenty of airflow through the helmet to help you keep your cool even when the pace is on. A rear LED TS+ light can be added for enhanced visibility in low light. The Tonic weighs a very competitive 265 grams.