The Catlike Vacuum is designed for maximum ventilation even at lower speeds, making it idea for warm weather riding. It features Catlike’s Dual Flow Technology that consists of 19 interconnected air intakes for increased airflow. The Vacuum also uses Catlike’s patented Air Tube System—an inner hollow net system that reinforces and strengthens the helmet’s structure without adding weight. Catlike rounds out the Vacuum with their MPS-3d rear retention system to assure a secure and comfortable fit. Price: $140 More: catlike.es