Trixie usb flash light collar long hair is the obvious solution for your long haired dog improving visibility and making late night walks significantly safer this 3cm wide light collar has a wide flat inner side ensuring it does not cut in and making it extremely comfortable for your dog the light will last up to 4 hours in flashing mode and up to 25 hours in continuous mode as well as being visible up to 500m away this makes your dog much easier to see both for you and for night time