Retrospec Lennon Bike Helmet With Led Safety Light Adjustable Dial And Our newest helmet is our go-to all-around helmet for entry-level riders to serious cyclists. Its sleek design slices through wind to make city commuting a breeze. CM-4 is designed with comfortable padding for long rides. Plus, this helmet's 15 vents and contoured design with inside air-channels force ventilation through/around helmet for a cool, comfortable ride. A built-in 5-LED 3-function flashing safety light keeps you seen and safe while on the road. CM-4 comes in five sporty colors with reflective straps and graphics for added visibility. Our ErgoKnob-2 allows you to adjust CM-4 to the perfect size with a simple twist. What's not to love? ALL-AROUND HELMET: Keep your head cool in our ergonomic Lennon Helmet. The removable visor and premium padding will get you to your destination in style and comfort. Go from entry level bike rider to serious cyclist with the switch of a helmet! PREMIUM VENTILATION: Our classic cyclist helmet has 15 vents with inside air-channels to keep you cool and comfortable for a casual ride or a long day on your bike. The removable padding can be washed and provides optimal cushion for a long ride. ADJUSTABLE FIT: A well-fitted helmet is a safe helmet. Use the ErgoKnob-2 dial-fit adjustment system to get the perfect fit! The Lennon fits heads between 54-61 cm/21.25-24 in (universal fit). SAFETY FIRST: Let drivers, pedestrians and other cyclists know your there with our built-in 5-LED safety light on the back of helmet. With 3 functions and a long-lasting battery, the Lennon will keep you seen and safe on the road. BRIGHT COLORS: Pick from a variety of bright colors to perfectly accent your bike and augment your personality.