Be seen! This collar is a must have! It is essential for night walks or in low visibility situations or when camping. Our high visibility LED safety dog collar offers glowing protection as it has three modes (slow flash, fast flash & steady illumination) it is very bright and easily seen. It’s made of nylon polyester webbing which maximizes durability and safety. They are USB rechargeable and come with a USB cable which can be recharged with any USB device. The collar offers up to 3.5 hours of illumination when fully charged and up to 1000 ft. of visibility. It is water-resistant and dustproof, perfect for daily workouts. The collar can withstand running or walking in the rain or any weather. (Make sure the charging port is well covered before wearing it in rainy weather). It is conveniently easy to adjust for a comfortable and safe fit. All sizes of the dog collars have a quick release snap closure and come with a heavy-duty D-ring.