High visibility flashing dog band rechargeable with three light settings slow flash fast flash or continuous light this collar doesnt have clips to attach leads it can simply slip over the dogs head one size fits all adjust the size by separating the band from the white clip cut the tube to size and then secure back in place the best thing about this safety collar is that it is usb rechargeable so you never have to worry about the hassle and cost of replacing batteriesr r rechargeabl