Crinkle balls are a cat's best friend at all hours of the day.
These balls have a loud crinkle noise when you touch them, which actually makes for a good accessory when photographing your cat! But it is also a very fun toy because of the light weight of them.
You will have a pack of 3 balls like the photo shows.
Why are they black or white?
Read my Theory of Black and White to get the full info about this. It has to do with how cats sees things and it might be the perfect change for you if you have a "4 AM:er"? Your cat needs toys that is more visible to him/her during the night and these are exactly that!