Most gender reveal balls are 6cm in diameter…. OURS ARE 8cm!!! Our gender reveal golf balls were specially created larger than the rest for 2 reasons. Easier surface area to hit, and ability to add more powder for a huge reveal! Our gender reveal Baseballs ball sets include 2 balls (1 pink and 1 blue ball). Each ball is filled to the very top with vibrant pink or blue powder to ensure the largest explosion for the reveal. The balls are marked with either a removable pink or blue ribbon to indicate the powder within the golf ball. All balls are made to ensure that the balls will not break during shipping or even if dropped on grass or soft clay. Although durable, the balls will certainly explode when struck with the Bat. The harder you hit the ball, the bigger explosion you will get. So swing away! Our Baseballs are coated with non-translucent paint to ensure you cannot see the colored powder when held up to a light. The powder within the balls is 100% non-toxic and safe. Through testing we have found our competitors make extremely poor quality balls. We produce only the highest quality plastic Baseballs which feel and look very similar to a real baseball when hitting. We strive to have the very best quality gender reveal Baseballs on the market. We aim to make your gender reveal party as special and unique as possible with our Gender reveal Balls. We are a family company and truly love seeing the reactions of the soon to be parents when the gender is revealed for their upcoming baby boy or girl. Please do not hesitate to ask any questions.