The Lumos Ultra Smart Bike Helmet is a high-quality helmet designed for cyclists looking for both safety and style. It features customizable front and back LED lights, providing visibility in low light conditions. The helmet comes in a sleek black color and is available in size M-L, suitable for riders with head sizes ranging from 21-1/4" to 24" (54 to 61cm). With its innovative design and brand reputation, the Lumos Ultra Smart Bike Helmet is a must-have accessory for any cycling enthusiast.