The Cannondale Intake MIPS Helmet has been tested for excellent air flow to reduce wind resistance. There are 13 vents to keep you cool as you go all out. The MIPS Technology adds an additional layer of protection against certain kinds of rotational forces during certain impacts. There is a Superport to store your sunglasses when not in use. You can adjust the retention system with a single hand to get the best fit. The slim profile well help you dodge obstacles you encounter and these helmets are super lightweight, only about 290g for the medium size. Sizing: Small/Medium: 52-58cm Large/X-large: 56-62cm. Available in Black/Volt and Grey/Orange.