This is a reflective dog leash from Hotta. The package states "Safe for nighttime walks!! Reflects light and glows!!" indicating a reflective function to enhance visibility at night. Product Details: Features: Reflects light, increasing safety during nighttime walks or in dark places. Usage: A dog leash designed for safe nighttime walks. Materials: Made of durable materials (according to search results, often recycled polyester or nylon) and features an easy-to-grip, padded handle. Safety: Reflects car headlights, significantly increasing visibility to drivers and helping to prevent accidents. Thank you for viewing. To reduce bulk, the leash will be shipped untied. Please understand.