Remember those dinosaurs you had as a kid that, when put in water, would grow 6x their size? So yeah, this is the same thing, just balls. Plop them in water and 72 hours later, you have indeed grown a pair! The initial pair is a little over two inches tall and grows to a realistic size.
But Grow A Pair is a silly gift with a serious goal. A percentage of gross profit on every sale will be donated to the Testicular Cancer Society. And while crass, there isn't a man, woman or child (of legal age) that doesn't crack up upon seeing these swingers!