LIVALL EVO21 combines the aggressive aerodynamics and seductive lines of the world of time trial cycling with intelligent active safety technology. Always Visible with Smart Lighting EVO21 incorporates a Smart LED lighting system. It combines the front white light LED strip with the rear LED light system which allows for 360° of maximum visibility. Other brands claim to give you 360° visibility, but they often fall short. The EVO21 offers true 360° coverage. Accelerometer The helmet features an accelerometer that detects vehicle deceleration, activating the brake lights and alerting nearby vehicles and pedestrians. The handlebar-mounted control system allows you to use the turn signal lights at the back of the helmet too. Crash-Test Certified Impact Protection The EVO21 proven impact management system comes with dual protection systems. Layer 1 is crafted from PC material that spreads the force of a crash throughout the shell. Layer 2 Polysource PSI is a special impact-resistant liner that absorbs the pressure and keeps it away from your head. The final layer is crafted out of memory foam, ensuring a snug fit no matter how long your ride. Fall Detection with SOS Alert In the event of an accident, LIVALL EVO21 uses a patented fall detection SOS system that will automatically activate after a 90-second countdown, sending your exact location via GPS to up to 3 of your emergency contacts. Ultra Lightweight With 30% more ventilation and 350g lightweight design, you’ll stay ahead of the pack while cutting down on sweat. Waterproof EVO21 is IPX5 waterproof, so the LED lighting system and remote will run smoothly in any weather. 10 Hour Battery Life LIVALL EVO21 allows up to 10 hours of battery life which is easily rechargeable with the included magnetic USB charge cable. Crash-tested certified as standard: CPSC 16 C.F.R part 1203 / CE EN1078 / AS/NZS 2065 Cycle Accessories Type: Helmet