In a Generation Chest you're guaranteed to receive 4 different golf balls from that generation (5 of each type for a total of 20 balls).
The balls contained in each Generation Chest are selected at random from the pool of available balls in that Generation, which may include balls you have previously owned or currently have in stock. In each Generation Chest there is an equal chance of being rewarded with any ball from that Generation.
Please note that we cannot provide refunds for the purchase of Generation chests.