The comfort pads for the BP-504 Barkless Dog Collar are designed for both short and long hair canines. Comfort pads provide maximum comfort and smooth stimulation that spreads out over a wider area. If you plan to leave the BP-504 on your canine for longer than 8 hours, we recommend adding comfort pads to your receiver. Train your pup to be a good dog or a better dog. We also carry other comfort pads for a variety of receivers.