COMPONENT : Theres a tumbler-like design on the bottom , which can ensure that the toy swing back and forth , and two balls with rails will follow the swing of the product , theres a teaser ball on the top . ADVANTAGE: Its heavy enough , It always finds itself standing up right even after being knocked down completely , the cap is easy to remove and put back on , The size of the opening for treats are customizable by moving the switch on the side of the toy , you can allow a lot to come out , none at all . USAGE : You can use it as a late-night and afternoon snack dispenser , Put in a certain amount of cat food before you go to bed, It can take care of your kitten when they are hungry as apposed to bored , It also could ensures you are not kept up or woken up early . THE KITTENS SOUL MATE : It's the most safety and interested toy for your cat . No battery include, When you are busy or away from home, It can be there for your cat to play with and feed your kitten . HEALTHY MATERIAL :This treat dispenser is made of ABS, PC and other healthy plastic, tasteless, healthy, anti-wear, and durable, can be used for a long time.This toy is helpful to increase cats IQ and kill boredom when playing, This toy is suitable for cat in any age, it can be played indoor and outdoor, also can be played by many cats together.