This is a dumbbell-shaped toy made of natural rubber, designed to be filled with treats for your dog to play with. - Brand: unipod - Model Name: Dumbbell - Material: 100% Natural Rubber - Colors: Pink, Yellow - Features: A toy that encourages your dog to figure out how to get the treats out Thank you for looking! This toy is a great way to stimulate your dog's mind! It provides a lot of brain stimulation, making it perfect for when you'll be away for a long time, such as when you're leaving your dog home alone, or before/during guests arrive. Of course, it also works great as a regular toy, so please give it a try.