The Nathan Hypernight Reflective Straps are perfect for staying safe and visible during low-light activities such as running, jogging, cycling, and walking. Each pack comes with two adjustable straps for a comfortable fit that won't interfere with body movement. Crafted with 100% polyester and CE-certified reflective material, these straps provide 360-degrees of reflectivity for maximum practicality. Hand wash only for easy cleaning.