Nite Brite Helmet Cover: Night Visibility Bike Helmet Cover or Any Sport Where Being Seen At Night Enhances Safety. One Size Fits All Adult and Child Sports Helmets In sports, a vital aspect of staying safe is being SEEN. Tail Wags introduces our new line of Lycra helmet covers with a sleek lightning bolt, uniquely designed to enhance your visibility at night. Incorporating 3M technology with our innovative helmet covers is safety at its best! Available in 5 colours - royal blue, vibrant green, shiny purple, hot pink, and flashy red - and they all feature the glow-in-the-dark silver 3M lightning bolt. One size fits all and, as a bonus, the Lycra is water repellent. Convenient slit for easy goggle clip access. Easy to hand wash; just lay flat to dry.