This is a great product for dog owners who want to keep their pets safe and visible at night. The collar is made of high-quality nylon material, which is durable and comfortable for dogs to wear. It is also equipped with 3M reflection light, which makes the dog visible to drivers and pedestrians at night. The collar has 4 different light modes, including steady on, flashing, and slow flashing, so you can choose the mode that best suits your needs. The collar is rechargeable, so you don't need to worry about replacing batteries. It is also adjustable, so you can find the perfect fit for your dog. The collar is also breathable and comfortable, making it ideal for daily wear. It is also water-resistant, so you can take your dog for a walk or run without worrying about the collar getting wet. Overall, this is a great product for dog owners who want to keep their pets safe and visible at night.