Golf Balls Sack
This has a very similar concept to a product which I have added not long ago.. That product features a ball sack similar to this one but instead of using it to store golf balls, it has two stress balls inside of it so that you can have a quick relief by squeezing it. Head over here to find out more about this ball sack.
This one on the other hand is used to store golf balls. It can store up to 6 golf balls. They also included two free pink golf balls.
It has a strong hook which allows you to hook it up onto your golf bag.