Caldwell's Potty Bells are a dog training aid specifically designed for potty training puppies. The bells are used to signal to the puppy when it is time to go potty, helping to establish good habits and improve bladder control. The potty bells come in a classic black color and are suitable for all dog breeds. Made by Caldwell's, a trusted brand in pet supplies, these potty bells are a practical and effective tool for training your furry companion.