Catlike Whisper Helmet MPS Evo retention system makes it easy to dial in the fit Dual Flow construction aligns the vents to channel air across the head Safety Crash Energy Splitter (CES) honey-comb EPS foam dissipates impact energy Safety Low Nape Protection (LNP)system protects the back of the back of the head in the event of a crash 39 vents to channel air across the head