Vittoria V300 Road Bicycle Helmet. The Vittoria V300 is a prime example of a lightweight, well ventilated road Bicycle Helmet that's also exceptionally comfortable and stylish. Vittoria's Roll Fit retention system makes a precision fit just a dial twist away while 23 vents ensures your head keeps cool as the temperatures rise. Ever had issues with bugs entering the vents of your Bicycle Helmet The Vittoria V300 has the answer to that with netting integrated into the Bicycle Helmet for eight center vents, front to back, to keep bugs at bay. Additionally, there's a removable visor that's perfect for protection against sunlight, rain, as well as debris as conditions warrant.