Pet can do nice interaction with its owner, increase the dog's subconscious, so as to achieve the purpose of training. Nontoxic material made, and you can clearly see the volume of your pet food. The spring-action trigger shoots them over 6 feet away.(Based on the weight of dog food). Ergonomic design with wrist strap which really fits on your palm hand so it won't slip away even on your sweaty hand. Combine fun and exercise you will have the happiest and fittest dog in the neighborhood!