Helmet reflectors are safety devices attached to helmets to enhance visibility, especially in low-light conditions. They are typically made from reflective materials that bounce light back towards its source, making the wearer more noticeable to others, such as drivers or cyclists. These reflectors come in various shapes and sizes, allowing for customization based on the helmet's design. Commonly used by cyclists, motorcyclists, and construction workers, helmet reflectors play a crucial role in reducing accidents and improving safety during nighttime or poor weather conditions.